Spelling & One-word Substitution
Why is there “a rat” in separate, and why does knife hide a silent k? Learn the spelling rules that work, the tricky words that catch everyone, words that sound alike, and single words that replace a whole phrase.
1How to learn any spelling
English spelling looks messy, but most words follow patterns. When a word does not follow a rule, a memory trick fixes it in your mind. Use this five-step routine for every new word.
- Break it into parts: Wed-nes-day, Feb-ru-ary, gov-ern-ment, en-vi-ron-ment.
- Find a small word inside: sepa rate, knowledge, island, definitely, business.
- Keep a list of words you get wrong, and practise them again after a few days.
- Look it up in a dictionary when you are not sure. Don't guess.
In India (and in ICSE books) we use British spelling: colour, favourite, neighbour, centre, metre, programme, travelled, jewellery, practise (verb) / practice (noun). American books write color, center, traveled. In the olympiad, pick the British form.
2Five spelling rules that really work
Rule 1 · i before e, except after c
When the sound is “ee”, write ie: believe, field, piece, chief, niece, thief, shield. But straight after c, write ei: receive, ceiling, receipt, deceive.
When the sound is “ay”, it is always ei: eight, weigh, neighbour, vein, reign.
weird, seize, protein, either, neither use ei even though there is no c. And their is always t-h-e-i-r (never thier).
Rule 2 · Doubling the last consonant
A short word that ends in one vowel + one consonant doubles that consonant before an ending that starts with a vowel (-ing, -ed, -er, -est).
| Double it | Don't double | Why not? |
|---|---|---|
| run → running, sit → sitting | rain → raining | two vowels (ai) before the n |
| stop → stopped, hop → hopping | jump → jumping | two consonants (mp) already |
| big → biggest, swim → swimmer | snow → snowing, fix → fixing | w, x and y are never doubled |
| begin → beginning, forget → forgetting | visit → visited, open → opening | stress is on the first part (VIS-it) |
| travel → travelled, cancel → cancelled | — | British spelling doubles a final l |
Rule 3 · Dropping the silent e
Drop the silent e before an ending that starts with a vowel: make → making, hope → hoping, write → writing, come → coming, safe → safest. Keep the e before an ending that starts with a consonant: hope → hopeful, care → careful, move → movement, safe → safety.
hope → hoping (wishing) but hop → hopping (jumping on one leg). Same for taping (tape) vs tapping (tap), and diner (dine) vs dinner. Famous exceptions: argue → argument, true → truly, nine → ninth.
Rule 4 · y changes to i
If a word ends in consonant + y, change y to i before adding an ending: baby → babies, city → cities, cry → cried, happy → happier, beauty → beautiful. But keep the y before -ing: cry → crying, carry → carrying.
If it ends in vowel + y, just add s or ed: boy → boys, key → keys, monkey → monkeys, play → played. (Exceptions: day → daily, pay → paid, say → said, lay → laid.)
Rule 5 · f or fe changes to ves
leaf → leaves, half → halves, wolf → wolves, shelf → shelves, knife → knives, wife → wives, life → lives, loaf → loaves. Exceptions just add s: roof → roofs, chief → chiefs, belief → beliefs, cliff → cliffs.
Which word is spelt correctly?
Choose the correct spelling: The children were _____ in the pool.
3Commonly misspelt words
These words appear in olympiad “choose the correct spelling” questions again and again. The trap spelling column shows the mistake examiners put in the options.
| Correct | Trap spelling | Memory trick |
|---|---|---|
| calendar | calender, calandar | Ends in -ar, like a star on the calendar. |
| grammar | grammer, gramar | Double m, ends in -ar. There is no e in grammar. |
| vacuum | vaccum, vaccuum | One c, two u’s: v-a-c-u-u-m. |
| separate | seperate | There is a rat in separate. |
| necessary | neccessary, necesary | A shirt has one collar and two sleeves: 1 c, 2 s. |
| receive | recieve | e before i after c. |
| believe | beleive | Never believe a lie. |
| beautiful | beautyful, beatiful | Big Elephants Are Useful (b-e-a-u). |
| because | becuase, becos | Big Elephants Can Always Understand Small Elephants. |
| February | Febuary | Say every part: Feb-ru-ar-y. |
| Wednesday | Wensday, Wendsday | Say it in parts: Wed-nes-day. |
| library | libary | li-brar-y: two r’s. |
| government | goverment | They govern + ment. |
| environment | enviroment | There is iron in environment. |
| friend | freind, frend | A friend is your friend to the end. |
| tomorrow | tommorow, tomorow | One m, two r’s. |
| beginning | begining | Rule 2: begin → beginning. |
| address | adress | Double d, double s. |
| committee | commitee, comittee | Double m, double t, double e. |
| accommodation | accomodation | Big enough for cc and mm. |
| definitely | definately | It is finite: de-finite-ly. |
| different | diffrent | differ + ent. |
| knowledge | knowlege | know + ledge. |
| island | iland | An island is land with water all around. |
| rhythm | rythm, rhythem | Rhythm Helps Your Two Hips Move. |
| piece | peice | A piece of pie. |
| dessert (sweet dish) | desert (sandy land) | Dessert has two s: you always want second sweets. |
| neighbour | neighbor (American), nieghbour | “ay” sound → ei; British -our. |
| successful | succesful, sucessful | cc, ss and one l. |
| until | untill | Only one l (but till has two). |
| argument | arguement | argue drops its e. |
| scissors | sissors, scisors | sc + double s. |
| restaurant | resturant | rest-au-rant. |
| business | buisness, bussiness | Go by bus to your business. |
| surprise | suprise | sur-prise: don't forget the first r. |
Choose the correctly spelt word: Water is _____ for all living things.
4Silent letters
A silent letter is written but not spoken. Hundreds of years ago many of these letters were pronounced; the spelling stayed the same even after the sound disappeared.
| Silent letter | Common pattern | Examples |
|---|---|---|
| k | kn at the start | knife, knee, knock, know, knot, knight, knit, knuckle |
| w | wr at the start; also a few others | write, wrong, wrist, wrap, wreck, answer, sword, whole, who |
| b | mb at the end; bt | thumb, lamb, climb, comb, bomb, crumb, doubt, debt |
| g | gn | gnaw, gnat, sign, design, foreign |
| gh | igh, ough, augh | night, light, eight, daughter, though, high |
| h | at the start of a few words; after w, g, r | hour, honest, honour, heir, ghost, rhyme, what, when |
| l | alk, alf, alm, ould | talk, walk, chalk, half, calf, calm, palm, could, should, would |
| t | stle, sten | listen, castle, whistle, fasten, glisten, Christmas |
| n | mn at the end | autumn, column, hymn, solemn |
| c | sc | science, scissors, scene, muscle |
| d | a few words | Wednesday, handkerchief |
| p | a few words | cupboard, receipt |
| u | gu, bu | guard, guess, guest, guitar, biscuit, build |
| s | a few words | island, aisle |
Because the h in hour, honest, honour, heir is silent, these words begin with a vowel sound. So we say an hour, an honest boy.
In which word is the b silent?
5Homophones and homonyms
Some words are sneaky twins. They sound the same, but they have different meanings, and often different spellings.
Homophones with sentences
| Pair | Example sentences |
|---|---|
| hear / here | I can hear the birds (hear has an ear in it!). Come here. |
| their / there / they’re | Their house is near the lake (belongs to them). Put it over there (place). They’re late (they are). |
| blew / blue | The wind blew hard last night (past of blow). The sky is blue. |
| knew / new | I knew the answer (past of know). I have a new bag. |
| right / write | Turn right. Please write your name. |
| see / sea | I can see the sea from the window. |
| week / weak | There are seven days in a week. He felt weak after the fever. |
| son / sun | Their son is playing in the sun. |
| flour / flower | Roti is made from wheat flour. A lotus is a flower. |
| tail / tale | The monkey has a long tail. Grandma told us a tale. |
| hole / whole | There is a hole in my sock. I ate the whole mango. |
| peace / piece | Gandhiji wanted peace. May I have a piece of cake? |
| pair / pear | A pair of shoes. A juicy pear. |
| meet / meat | Let’s meet at five. Tigers eat meat. |
| road / rode | She rode her cycle along the road. |
| sale / sail | Shoes are on sale. The boats sail on the river. |
| plain / plane | The Indo-Gangetic plain is flat. The plane landed in Mumbai. |
| bare / bear | Don’t walk with bare feet. A bear lives in the forest. |
| dear / deer | Dear Sir. A deer ran across the path. |
| night / knight | Owls hunt at night. The knight wore armour. |
| aloud / allowed | Read the poem aloud. Phones are not allowed. |
| to / too / two | I went to the market. I want to come too. I bought two apples. |
| its / it’s | The dog wagged its tail. It’s (it is) raining. |
| your / you’re | Is this your pen? You’re (you are) my best friend. |
| weather / whether | The weather is pleasant. I don’t know whether he will come. |
| steal / steel | Never steal. The spoon is made of steel. |
| stationary / stationery | The bus was stationary (not moving). Pens and paper are stationery (e for envelope). |
| heir / air / hair | The prince is the heir to the throne. Fresh air. Long hair. |
“The wind _____ very hard last night.” Both blew and blue sound right, but last night shows past time, so the answer is the verb blew. Always check what job the word does in the sentence: a colour, a verb, a place, or ownership?
Homonyms: one spelling, two meanings
| Word | Meaning 1 | Meaning 2 |
|---|---|---|
| bat | Virat held the cricket bat. | A bat hangs upside down. |
| bank | Papa went to the bank to deposit money. | We sat on the river bank. |
| bark | Dogs bark at strangers. | The bark of the tree is rough. |
| match | India won the match. | Light the lamp with a match. |
| ring | A gold ring. | Please ring the bell. |
| watch | My watch shows 5 o’clock. | Let’s watch the stars. |
| spring | Flowers bloom in spring. | A metal spring bounces back. |
| left | Turn left. | He left early (past of leave). |
| fair | We went to the village fair. | That is not fair! |
| well | Water from the well. | She sings well. |
A few words are spelt the same but sound different when the meaning changes. These are called homographs: I read (reed) every day / I read (red) it yesterday; a tear (teer) in the eye / a tear (tair) in the paper; the wind blows / wind the clock; live in Delhi / a live match.
Fill in the blank: Please buy some _____ from the shop; I need pens and paper.
Which sentence uses the correct word?
6One-word substitution
A one-word substitute replaces a long phrase with a single word. “A person who writes the story of his or her own life” becomes autobiography. Knowing a few word roots lets you work out many of them.
Word roots that unlock many answers
| Root | Meaning | Words |
|---|---|---|
| auto | self | autobiography, autograph |
| bio | life | biography, biology |
| graph | write | autograph, biography |
| bi | two | biennial, bicycle, binoculars |
| ambi | both | ambidextrous |
| amphi | both kinds / both sides | amphibian |
| herb / carn / omni | plant / flesh / all | herbivore, carnivore, omnivore |
| vore | eat | herbivore, carnivore, omnivore |
| apis / avis / aqua | bee / bird / water | apiary, aviary, aquarium |
| tele / micro / scope | far / small / look at | telescope, microscope |
| annus / cent | year / hundred | annual, centenary, century |
People
| Meaning | One word |
|---|---|
| The life story of a person written by someone else | biography |
| The life story of a person written by that person | autobiography |
| A child whose parents are dead | orphan |
| A woman whose husband has died / a man whose wife has died | widow / widower |
| A person who can use both hands equally well | ambidextrous |
| A person who travels into space | astronaut |
| A person who walks on the road | pedestrian |
| People who watch a match or show | spectators (a match) / audience (a show) |
| A person who offers to help without pay | volunteer |
| A person who does not eat meat, fish or eggs | vegetarian |
| A person who cannot read or write | illiterate |
| A person who cannot speak | mute |
| A person who always looks on the bright side / the dark side | optimist / pessimist |
| A person who loves his or her country | patriot |
| A person who betrays his or her country | traitor |
| A person who studies plants / animals / stars and planets | botanist / zoologist / astronomer |
| A person who mends shoes | cobbler |
| A person who sells flowers | florist |
Animals and plants
| Meaning | One word |
|---|---|
| An animal that can live both on land and in water (frog, toad) | amphibian |
| An animal that eats only plants (cow, deer) | herbivore |
| An animal that eats the flesh of other animals (lion, tiger) | carnivore |
| An animal that eats both plants and animals (crow, bear) | omnivore |
| A kind of animal that no longer exists (dinosaur, dodo) | extinct |
| A garden of fruit trees | orchard |
Places
| Meaning | One word | Meaning | One word |
|---|---|---|---|
| where bees are kept | apiary | home of a dog | kennel |
| where birds are kept | aviary | home of a horse | stable |
| where fish are kept | aquarium | home of a pig | sty |
| where aeroplanes are kept | hangar | home of a lion | den |
| where grain is stored | granary | home of a rabbit | burrow |
| where coins are made | mint | home of bees (they make it) | hive |
| where old and rare objects are displayed | museum | place for scientific experiments | laboratory |
| where books are kept for reading | library | place for watching stars and planets | observatory |
| where medicines are sold | pharmacy (chemist’s) | where the dead are buried | cemetery |
Time
| Meaning | One word |
|---|---|
| happening once a year | annual |
| happening twice a year | biannual (half-yearly) |
| happening once every two years | biennial |
| a hundredth anniversary | centenary (also centennial) |
| a period of two weeks / ten years / a hundred years / a thousand years | fortnight / decade / century / millennium |
Things and describing words
| Meaning | One word | Meaning | One word |
|---|---|---|---|
| instrument to see faraway stars and planets | telescope | that which can be eaten | edible |
| instrument to see very tiny things | microscope | writing that cannot be read | illegible |
| instrument to measure temperature | thermometer | a sound that cannot be heard | inaudible |
| instrument doctors use to hear the heartbeat | stethoscope | something that cannot be seen | invisible |
| instrument that shows directions | compass | something that can be carried easily | portable |
| that which can be seen through (clear glass) | transparent | a decision agreed by everyone | unanimous |
| a disease that spreads by touch | contagious | a writer whose name is not known | anonymous |
- apiary (bees) vs aviary (birds): one letter apart.
- biennial (once in two years) vs biannual (twice a year). Biannual has the word annual (yearly) inside it, so it happens twice within a year; biennial stretches across two whole years.
- biography (by someone else) vs autobiography (auto = self).
- ambidextrous (both hands) vs look-alikes ambitious (wanting success) and ambiguous (having two meanings).
- amphibian (land and water) is not a reptile. Snakes and lizards are reptiles; frogs are amphibians.
An animal that eats both plants and animals is called:
Which word means happening twice a year?
7Watch and explore
- 📖Homophonesbbc.co.uk/bitesize · watch, read and play
- 📖Their, they’re or there?bbc.co.uk/bitesize · the three-way homophone
- 📖Silent lettersbbc.co.uk/bitesize · spot the letters you can't hear
- 📖Spelling patterns and the -y rulebbc.co.uk/bitesize · when y changes to i
- 📖Homophonesimple.wikipedia.org · short, simple explanation
- 🎮Wordsmyth Kids dictionarykids.wordsmyth.net · check any spelling
8Quick recap
- i before e, except after c (believe, receive); “ay” sound → ei (eight, neighbour). Rule-breakers: weird, seize, their.
- Short word, one vowel + one consonant → double before -ing/-ed/-er: running, stopped, swimming, beginning.
- Drop silent e before a vowel ending (hoping, making); keep it before a consonant ending (hopeful, movement).
- Consonant + y → ies/ied (babies, cried); vowel + y → just add s (boys, keys).
- Tricky words: calendar, grammar, vacuum, separate, necessary, receive.
- Silent letters: knife, write, thumb, hour, island, listen, autumn.
- Homophones sound the same but differ in spelling and meaning (hear/here, blew/blue, their/there/they’re).
- Homonyms are spelt and said the same but mean different things (bat, bank, bark).
- its = belonging to it; it’s = it is. your = belonging to you; you’re = you are.
- Roots help: auto = self, bio = life, bi = two, ambi = both, omni = all, vore = eat.
- apiary bees · aviary birds · aquarium fish · hangar aeroplanes.
- biennial once in two years · biannual twice a year · annual once a year.