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Commonly Misspelled Words in English: Lists, Rules and Memory Tricks

Accommodate, necessary, definitely, separate. Learn the spelling patterns, rules and memory tricks behind the words that cause the most mistakes.

EDUSAMBAM Editorial Team | 24 min read | Last updated: November 2026 | Vocabulary
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Even well-read students lose marks to spelling. Words such as accommodate, necessary, definitely and separate are misspelled by native speakers and learners alike. The good news is that most mistakes fall into a small number of patterns, and once you know the patterns, you can fix whole groups of words at a time.

This guide explains the main causes of spelling mistakes and gives 233 commonly misspelled words in nine groups, each with the common wrong spelling and a hint about where the mistake happens. It also covers ten spelling rules, British and American spelling differences, memory tricks, key points, ten practice questions and a teacher activity.

It connects with Commonly Confused Words, Singular and Plural Nouns and Common Errors in English. Spelling in this guide follows British English.

1.Why Do We Misspell Words?

English spelling is difficult because it has borrowed words from Latin, Greek, French, German and many other languages, and the spelling often preserves the history of the word, not its sound. Common causes of mistakes are:

2.Ten Spelling Rules That Help

RuleExamples
i before e, except after cbelieve, achieve, receive, ceiling; exceptions: weird, seize, height, leisure
Drop the silent e before a vowel suffixhope → hoping, make → making; keep it before a consonant: hope → hopeful
Keep the e after soft c or g before -able, -ousnotice → noticeable, courage → courageous
Double the final consonant (one vowel + one consonant, stressed syllable)run → running, begin → beginning, refer → referred
Change y to i before a suffixhappy → happiness, carry → carried; keep y before -ing: carrying
Full + suffix: one lcareful, helpful, beautiful, grateful
All + word: one lalways, already, almost, also, although, altogether
Prefix + word: keep both lettersun + necessary → unnecessary, dis + satisfied → dissatisfied, mis + spell → misspell
Add -ly to a word ending in l: keep bothreal → really, final → finally, accidental → accidentally
Words ending in -ic add -allybasic → basically, specific → specifically (exception: publicly)

Rules have exceptions, but they work for most words. For the exceptions, use the lists below.

3.Double Letters: Which Letters Are Doubled?

Correct spellingCommon misspellingWhere the mistake happens
accommodateaccomodatetwo c's and two m's
addressadresstwo d's and two s's
aggressiveagressivetwo g's and two s's
apparentapparanttwo p's
appearanceapearancetwo p's
assistantassistenttwo s's, ends in -ant
beginningbeginingdouble n
committeecommiteetwo m's, two t's, two e's
committedcomittedtwo m's and two t's
disappeardissapearone s, two p's
disappointdissapointone s, two p's
embarrassembarasstwo r's and two s's
exaggerateexageratetwo g's
harassharrassone r, two s's
occasionocassiontwo c's, one s
occurredoccuredtwo r's
occurrenceoccurencetwo c's and two r's
possessposesstwo s's twice
recommendrecomendone c, two m's
referredrefereddouble r
preferredprefereddouble r
successsucesstwo c's and two s's
successfulsucessfultwo c's and two s's
tomorrowtommorowone m, two r's
necessaryneccessaryone c, two s's
unnecessaryunecessaryun + necessary
accidentallyaccidentlyaccidental + ly
acrossaccrossone c
opportunityoportunitytwo p's
professionalproffesionalone f, two s's
questionnairequestionairetwo n's
parallelparalelltwo l's, then one l
millenniummileniumtwo l's and two n's
dilemmadilematwo m's
swimmingswimingdouble m
forgettingforgetingdouble t
planningplaningdouble n
controlledcontroleddouble l
MediterraneanMediteraneantwo r's
sufficientsuficienttwo f's

4.The I Before E Rule and Its Exceptions

Correct spellingCommon misspellingWhere the mistake happens
achieveacheivei before e
believebeleivei before e
briefbreifi before e
chiefcheifi before e
fieldfeildi before e
friendfreindi before e
griefgreifi before e
nieceneicei before e
piecepeicei before e
reliefreleifi before e
retrieveretreivei before e
shieldsheildi before e
thieftheifi before e
yieldyeildi before e
receiverecievee before i after c
deceivedecievee before i after c
ceilingcielinge before i after c
conceiveconcievee before i after c
perceivepercievee before i after c
receiptreciepte before i after c
neighbournieghbourei sounds like ay
eightieghtei sounds like ay
weighwieghei sounds like ay
weirdwierdexception
seizesiezeexception
foreignforiegnexception
heighthieghtexception
leisureliesureexception
proteinprotienexception
eitherietherexception

5.Silent Letters

Correct spellingCommon misspellingWhere the mistake happens
knowledgeknowlegesilent k, d before ge
debtdetsilent b
doubtdoutsilent b
subtlesuttlesilent b
climbclimesilent b
islandilandsilent s
musclemusslesilent c
scissorssissorssilent c
sciencesceincesc, then ie
scenesenesilent c
autumnautumsilent n
columncolumsilent n
solemnsolemsilent n
condemncondemsilent n
psychologysychologysilent p
pneumonianumoniasilent p
WednesdayWensdaysilent d
FebruaryFebuaryfirst r is pronounced less
governmentgovermentn before m
environmentenviromentn before m
vegetablevegtablefour syllables
interestingintrestinginter-est-ing
chocolatechoclatethree syllables
listenlisensilent t
castlecaslesilent t
whistlewhislesilent t
honestonestsilent h
ghostgostgh
rhymerimerh

6.Words Ending in -able and -ible

Correct spellingCommon misspellingWhere the mistake happens
acceptableacceptible-able after a full word
availableavailible-able
comfortablecomfortible-able
desirabledesirible-able
enjoyableenjoyible-able
reliablereliible-able
valuablevaluible-able
responsibleresponsable-ible
possiblepossable-ible
visiblevisable-ible
terribleterrable-ible
horriblehorrable-ible
incredibleincredable-ible
sensiblesensable-ible
flexibleflexable-ible
permissiblepermissable-ible
legiblelegable-ible
eligibleeligable-ible
audibleaudable-ible
edibleedable-ible
reversiblereversable-ible
accessibleaccessable-ible
convertibleconvertable-ible
defensibledefensable-ible

7.Words Ending in -ance, -ence, -ant and -ent

Correct spellingCommon misspellingWhere the mistake happens
independenceindependance-ence
existenceexistance-ence
permanentpermanant-ent
persistentpersistant-ent
resistanceresistence-ance
assistanceassistence-ance
attendanceattendence-ance
maintenancemaintainance-ten, not -tain
perseveranceperseverence-ance
ignoranceignorence-ance
importanceimportence-ance
innocenceinnocense-ence
intelligenceintelligance-ence
referencereferance-ence
confidenceconfidance-ence
evidenceevidance-ence
excellentexcellant-ent
frequentfrequant-ent
obedientobediant-ent
differentdiffirent-ent
differencediffrence-ence

8.Words Ending in -ary, -ery and -ory

Correct spellingCommon misspellingWhere the mistake happens
cemeterycemetary-ery
librarylibary-ary, keep the first r
dictionarydictionery-ary
secretarysecretery-ary
ordinaryordinery-ary
temporarytemporery-ary
voluntaryvoluntery-ary
documentarydocumentry-ary
extraordinaryextrordinaryextra + ordinary
laboratorylabratory-ory
categorycatagory-ory
boundaryboundry-ary
vocabularyvocabulery-ary
machinerymachinary-ery
monasterymonastary-ery
stationerystationarypaper is stationery

9.Words Ending in -cede, -ceed and -sede

Correct spellingCommon misspellingWhere the mistake happens
exceedexcedeone of three words ending in -ceed
proceedprocedeone of three words ending in -ceed
succeedsuccedeone of three words ending in -ceed
precedepreceed-cede
recedereceed-cede
concedeconceed-cede
intercedeinterceed-cede
supersedesupercedethe only word ending in -sede

10.Unusual and Difficult Spellings

Correct spellingCommon misspellingWhere the mistake happens
rhythmrythmrh and two h's
yachtyatchsilent ch
queuequeueue
pronunciationpronounciationno ou in the second part
privilegepriviledgeno d
separateseperatea rat in sepaRATe
definitelydefinatelyfinite is inside
desperatedesparate-erate
entrepreneurentreprenuer-eur
fluorescentflorescentfluor-
guaranteegaranteegua-
gaugeguageau
hierarchyheirarchyhi-er
humoroushumourousno u before ous
immediatelyimmediatlyimmediate + ly
jewelleryjeweleryBritish: -ellery
lieutenantleutenantlieu-
licenselisencenoun licence, verb license (British)
manoeuvremanuevermanoeuvre
miniatureminiture-ature
mischievousmischievious-ous, not -ious
noticeablenoticablekeep the e
parliamentparliment-ia-
physicalphisicalph
playwrightplaywritewright
politicianpolitican-ician
prejudicepredjudiceno d
pursuepersuepur-
reservoirresevoir-ervoir
restaurantrestaraunt-aurant
sergeantsargeant-ge-
sincerelysincerlysincere + ly
souvenirsuvenirsou-
surprisesuprisefirst r
thresholdthreshholdone h in the middle
tyrannytyranytwo n's
unfortunatelyunfortunatlyfortunate + ly
vacuumvaccumtwo u's
viciousvisciousno s
withholdwitholdwith + hold
sophisticatedsofisticatedsophis-
conscienceconsiencecon-sci-ence
bureaucracybeurocracybureau-
cynicalcinicalcyn-
exhilaratingexhilerating-arat-
fascinatefacinatesc
gorgeousgorgous-eous

11.Words Ending in -ous, -eous and -ious

Correct spellingCommon misspellingWhere the mistake happens
consciousconcioussc
conscientiousconsciencious-tious
deliciousdelicous-icious
ambitiousambicious-tious
anxiousanxcious-xious
preciousprescious-cious
suspicioussuspicous-icious
courageouscouragous-eous
outrageousoutragous-eous
advantageousadvantagous-eous
hideoushidious-eous
spontaneousspontanious-eous
simultaneoussimultanious-eous
miscellaneousmiscelaneoustwo l's
continuouscontinous-uous
enormousenourmous-ormous
curiouscurius-ious
seriousserius-ious

12.British and American Spelling

Both spellings are correct in their own region. Choose one style and use it throughout a piece of writing. This guide, and most examinations in Pakistan, India, the United Kingdom and many other countries, use British spelling.

British spellingAmerican spelling
colourcolor
favourfavor
neighbourneighbor
honourhonor
behaviourbehavior
labourlabor
centrecenter
theatretheater
metremeter
fibrefiber
litreliter
organiseorganize
realiserealize
recogniserecognize
analyseanalyze
paralyseparalyze
defencedefense
offenceoffense
licence (noun)license
practice (noun) / practise (verb)practice (both)
travelledtraveled
cancelledcanceled
jewelleryjewelry
greygray
programmeprogram
chequecheck
tyretire
aluminiumaluminum
cataloguecatalog
dialoguedialog
mouldmold
ploughplow
pyjamaspajamas
kerbcurb
scepticskeptic
storeystory

13.Memory Tricks for the Hardest Words

WordMemory trick
necessaryOne collar (c) and two sleeves (ss).
separateThere is "a rat" in sepaRATe.
definitelyThere is "finite" inside definitely.
believeNever believe a lie.
pieceA piece of pie.
accommodateThe word is big enough for two cots (cc) and two mattresses (mm).
stationeryStationery has an e, as in envelope.
argumentI lost an e in an argument.
rhythmRhythm helps your two hips move.
businessBusiness is busy: bus + i + ness.
embarrassIt will make you go really red and sound sorry: two r's and two s's.
parallelAll lines in parallel have two parallel l's.

14.How to Improve Your Spelling

Key points to remember
For teachers and parents

Activity: give each student a list of ten words from one group in the tables, ask them to use look, say, cover, write and check, and then give a dictation test the next day. A group dictation game, in which teams race to write the correct spelling on the board, also works well. Students who like these tests may also enjoy the spelling bee practice tests on this website.

Please note: this guide uses British spelling. Some words have more than one accepted spelling, and only the most common correct forms are shown.

Where These Facts Come From
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