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
🔊 LISTEN TO THIS ARTICLE
SAVE YOUR EYES • IMPROVE YOUR LISTENING
Listen to the article instead of relying only on continuous screen reading.
Ready to read the article.
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.
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:
Double letters. It is hard to hear whether a letter is doubled: occurrence, embarrass.
Silent letters. Some letters are written but not pronounced: debt, knowledge, autumn.
Vowels in unstressed syllables. The vowel sounds the same in -ant and -ent, so we guess: dependent, independence.
Foreign spellings.Restaurant, entrepreneur and rhythm keep their French or Greek spellings.
Similar-looking patterns.-able / -ible, -ary / -ery and ie / ei cause constant confusion.
un + necessary → unnecessary, dis + satisfied → dissatisfied, mis + spell → misspell
Add -ly to a word ending in l: keep both
real → really, final → finally, accidental → accidentally
Words ending in -ic add -ally
basic → 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 spelling
Common misspelling
Where the mistake happens
accommodate
accomodate
two c's and two m's
address
adress
two d's and two s's
aggressive
agressive
two g's and two s's
apparent
apparant
two p's
appearance
apearance
two p's
assistant
assistent
two s's, ends in -ant
beginning
begining
double n
committee
commitee
two m's, two t's, two e's
committed
comitted
two m's and two t's
disappear
dissapear
one s, two p's
disappoint
dissapoint
one s, two p's
embarrass
embarass
two r's and two s's
exaggerate
exagerate
two g's
harass
harrass
one r, two s's
occasion
ocassion
two c's, one s
occurred
occured
two r's
occurrence
occurence
two c's and two r's
possess
posess
two s's twice
recommend
recomend
one c, two m's
referred
refered
double r
preferred
prefered
double r
success
sucess
two c's and two s's
successful
sucessful
two c's and two s's
tomorrow
tommorow
one m, two r's
necessary
neccessary
one c, two s's
unnecessary
unecessary
un + necessary
accidentally
accidently
accidental + ly
across
accross
one c
opportunity
oportunity
two p's
professional
proffesional
one f, two s's
questionnaire
questionaire
two n's
parallel
paralell
two l's, then one l
millennium
milenium
two l's and two n's
dilemma
dilema
two m's
swimming
swiming
double m
forgetting
forgeting
double t
planning
planing
double n
controlled
controled
double l
Mediterranean
Mediteranean
two r's
sufficient
suficient
two f's
4.The I Before E Rule and Its Exceptions
Correct spelling
Common misspelling
Where the mistake happens
achieve
acheive
i before e
believe
beleive
i before e
brief
breif
i before e
chief
cheif
i before e
field
feild
i before e
friend
freind
i before e
grief
greif
i before e
niece
neice
i before e
piece
peice
i before e
relief
releif
i before e
retrieve
retreive
i before e
shield
sheild
i before e
thief
theif
i before e
yield
yeild
i before e
receive
recieve
e before i after c
deceive
decieve
e before i after c
ceiling
cieling
e before i after c
conceive
concieve
e before i after c
perceive
percieve
e before i after c
receipt
reciept
e before i after c
neighbour
nieghbour
ei sounds like ay
eight
ieght
ei sounds like ay
weigh
wiegh
ei sounds like ay
weird
wierd
exception
seize
sieze
exception
foreign
foriegn
exception
height
hieght
exception
leisure
liesure
exception
protein
protien
exception
either
iether
exception
5.Silent Letters
Correct spelling
Common misspelling
Where the mistake happens
knowledge
knowlege
silent k, d before ge
debt
det
silent b
doubt
dout
silent b
subtle
suttle
silent b
climb
clime
silent b
island
iland
silent s
muscle
mussle
silent c
scissors
sissors
silent c
science
sceince
sc, then ie
scene
sene
silent c
autumn
autum
silent n
column
colum
silent n
solemn
solem
silent n
condemn
condem
silent n
psychology
sychology
silent p
pneumonia
numonia
silent p
Wednesday
Wensday
silent d
February
Febuary
first r is pronounced less
government
goverment
n before m
environment
enviroment
n before m
vegetable
vegtable
four syllables
interesting
intresting
inter-est-ing
chocolate
choclate
three syllables
listen
lisen
silent t
castle
casle
silent t
whistle
whisle
silent t
honest
onest
silent h
ghost
gost
gh
rhyme
rime
rh
6.Words Ending in -able and -ible
Correct spelling
Common misspelling
Where the mistake happens
acceptable
acceptible
-able after a full word
available
availible
-able
comfortable
comfortible
-able
desirable
desirible
-able
enjoyable
enjoyible
-able
reliable
reliible
-able
valuable
valuible
-able
responsible
responsable
-ible
possible
possable
-ible
visible
visable
-ible
terrible
terrable
-ible
horrible
horrable
-ible
incredible
incredable
-ible
sensible
sensable
-ible
flexible
flexable
-ible
permissible
permissable
-ible
legible
legable
-ible
eligible
eligable
-ible
audible
audable
-ible
edible
edable
-ible
reversible
reversable
-ible
accessible
accessable
-ible
convertible
convertable
-ible
defensible
defensable
-ible
7.Words Ending in -ance, -ence, -ant and -ent
Correct spelling
Common misspelling
Where the mistake happens
independence
independance
-ence
existence
existance
-ence
permanent
permanant
-ent
persistent
persistant
-ent
resistance
resistence
-ance
assistance
assistence
-ance
attendance
attendence
-ance
maintenance
maintainance
-ten, not -tain
perseverance
perseverence
-ance
ignorance
ignorence
-ance
importance
importence
-ance
innocence
innocense
-ence
intelligence
intelligance
-ence
reference
referance
-ence
confidence
confidance
-ence
evidence
evidance
-ence
excellent
excellant
-ent
frequent
frequant
-ent
obedient
obediant
-ent
different
diffirent
-ent
difference
diffrence
-ence
8.Words Ending in -ary, -ery and -ory
Correct spelling
Common misspelling
Where the mistake happens
cemetery
cemetary
-ery
library
libary
-ary, keep the first r
dictionary
dictionery
-ary
secretary
secretery
-ary
ordinary
ordinery
-ary
temporary
temporery
-ary
voluntary
voluntery
-ary
documentary
documentry
-ary
extraordinary
extrordinary
extra + ordinary
laboratory
labratory
-ory
category
catagory
-ory
boundary
boundry
-ary
vocabulary
vocabulery
-ary
machinery
machinary
-ery
monastery
monastary
-ery
stationery
stationary
paper is stationery
9.Words Ending in -cede, -ceed and -sede
Correct spelling
Common misspelling
Where the mistake happens
exceed
excede
one of three words ending in -ceed
proceed
procede
one of three words ending in -ceed
succeed
succede
one of three words ending in -ceed
precede
preceed
-cede
recede
receed
-cede
concede
conceed
-cede
intercede
interceed
-cede
supersede
supercede
the only word ending in -sede
10.Unusual and Difficult Spellings
Correct spelling
Common misspelling
Where the mistake happens
rhythm
rythm
rh and two h's
yacht
yatch
silent ch
queue
que
ueue
pronunciation
pronounciation
no ou in the second part
privilege
priviledge
no d
separate
seperate
a rat in sepaRATe
definitely
definately
finite is inside
desperate
desparate
-erate
entrepreneur
entreprenuer
-eur
fluorescent
florescent
fluor-
guarantee
garantee
gua-
gauge
guage
au
hierarchy
heirarchy
hi-er
humorous
humourous
no u before ous
immediately
immediatly
immediate + ly
jewellery
jewelery
British: -ellery
lieutenant
leutenant
lieu-
license
lisence
noun licence, verb license (British)
manoeuvre
manuever
manoeuvre
miniature
miniture
-ature
mischievous
mischievious
-ous, not -ious
noticeable
noticable
keep the e
parliament
parliment
-ia-
physical
phisical
ph
playwright
playwrite
wright
politician
politican
-ician
prejudice
predjudice
no d
pursue
persue
pur-
reservoir
resevoir
-ervoir
restaurant
restaraunt
-aurant
sergeant
sargeant
-ge-
sincerely
sincerly
sincere + ly
souvenir
suvenir
sou-
surprise
suprise
first r
threshold
threshhold
one h in the middle
tyranny
tyrany
two n's
unfortunately
unfortunatly
fortunate + ly
vacuum
vaccum
two u's
vicious
viscious
no s
withhold
withold
with + hold
sophisticated
sofisticated
sophis-
conscience
consience
con-sci-ence
bureaucracy
beurocracy
bureau-
cynical
cinical
cyn-
exhilarating
exhilerating
-arat-
fascinate
facinate
sc
gorgeous
gorgous
-eous
11.Words Ending in -ous, -eous and -ious
Correct spelling
Common misspelling
Where the mistake happens
conscious
concious
sc
conscientious
consciencious
-tious
delicious
delicous
-icious
ambitious
ambicious
-tious
anxious
anxcious
-xious
precious
prescious
-cious
suspicious
suspicous
-icious
courageous
couragous
-eous
outrageous
outragous
-eous
advantageous
advantagous
-eous
hideous
hidious
-eous
spontaneous
spontanious
-eous
simultaneous
simultanious
-eous
miscellaneous
miscelaneous
two l's
continuous
continous
-uous
enormous
enourmous
-ormous
curious
curius
-ious
serious
serius
-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 spelling
American spelling
colour
color
favour
favor
neighbour
neighbor
honour
honor
behaviour
behavior
labour
labor
centre
center
theatre
theater
metre
meter
fibre
fiber
litre
liter
organise
organize
realise
realize
recognise
recognize
analyse
analyze
paralyse
paralyze
defence
defense
offence
offense
licence (noun)
license
practice (noun) / practise (verb)
practice (both)
travelled
traveled
cancelled
canceled
jewellery
jewelry
grey
gray
programme
program
cheque
check
tyre
tire
aluminium
aluminum
catalogue
catalog
dialogue
dialog
mould
mold
plough
plow
pyjamas
pajamas
kerb
curb
sceptic
skeptic
storey
story
13.Memory Tricks for the Hardest Words
Word
Memory trick
necessary
One collar (c) and two sleeves (ss).
separate
There is "a rat" in sepaRATe.
definitely
There is "finite" inside definitely.
believe
Never believe a lie.
piece
A piece of pie.
accommodate
The word is big enough for two cots (cc) and two mattresses (mm).
stationery
Stationery has an e, as in envelope.
argument
I lost an e in an argument.
rhythm
Rhythm helps your two hips move.
business
Business is busy: bus + i + ness.
embarrass
It will make you go really red and sound sorry: two r's and two s's.
parallel
All lines in parallel have two parallel l's.
14.How to Improve Your Spelling
Look, say, cover, write, check. Look at the word, say it in syllables, cover it, write it from memory and check.
Keep a personal list of the words you misspell and revise it every week.
Break words into syllables and say each part: nec-es-sar-y.
Learn word families. If you can spell sign, you can spell signature and design.
Read widely. Seeing words in print builds your visual memory.
Proofread slowly, reading from the end to the beginning, so that you see each word on its own.
Do not trust spell-check completely. It cannot tell their from there.
Key points to remember
Most spelling mistakes come from double letters, silent letters, unstressed vowels and foreign spellings.
Learn the rules: i before e except after c, drop silent e, double the final consonant.
Learn words in groups with the same ending: -able/-ible, -ance/-ence, -ary/-ery.
Only three words end in -ceed (exceed, proceed, succeed) and only one ends in -sede (supersede).
Keep one style, British or American, within a piece of writing.
Use memory tricks and syllables for the hardest words.
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.