From Sterwiki

This is a list of common misspellings in the English language.

MISSPELLING    CORRECT SPELLING

abberration    aberration
accomodation   accommodation
acheive        achieve
adress         address
alterior       ulterior
athiest        atheist
autum          autumn
befor          before
beleive        believe
Britian        Britain
Caucasion      Caucasian
cemetary       cemetery
committment    commitment (but committed, committing, committee)
concensus      consensus
concieve       conceive
Dalmation      Dalmatian
decaffinated   decaffeinated
decathalon     decathlon
definately     definitely
desireable     desirable
diety          deity (error promulgated by an early Unix spell-checker)
diptheria      diphtheria
dispell        dispel
ecx., exc.     etc. (for et cetera)
embarass       embarrass
enviroment     environment
expresso       espresso
extremly       extremely
facist         fascist
Febuary        February
flourescent    fluorescent
flouride       fluoride
fourty         forty
freind         friend
geneology      genealogy
geuss          guess
goverment      government
grammer        grammar
hampster       hamster
harrass        harass
heros          heroes
hieght, heigth height
hunderd        hundred
hygeine        hygiene
hypocracy      hypocrisy
independance   independence
innoculate     inoculate
intresting     interesting
libary         library
lightening     lightning
mabey          maybe
masterbate     masturbate
managable      manageable
millenium      millennium
miniscule      minuscule
mischievious   mischievous
mispell        misspell
missle         missile
mit            mitt (except for MIT, or Massachusetts Institute of Technology)
monkies        monkeys (except for the 1960s rock group, who are The Monkees)
morgage        mortgage
mountian       mountain
neccessary     necessary
neice          niece
nickle         nickel
nineth         ninth
ninty          ninety
noticable      noticeable
occured        occurred
occurence      occurrence
oppurtunity    opportunity
opthamologist  ophthalmologist
paralell       parallel
pasttime       pastime
peice          piece
percieve       perceive
perserverance  perseverance
persue         pursue
posession      possession
pertend        pretend
Pharoah        Pharaoh (except for Pharoah Sanders)
Pokeman        Pokémon
potatoe        potato
preceeding     preceding  
pronounciation pronunciation
publically     publicly (the one exception to the -ically rule)
rasberry       raspberry
recieve        receive
reccomend      recommend
rediculous     ridiculous
reguardless    regardless
rythm          rhythm (but eurythmics)
sacreligious   sacrilegious
Saterday       Saturday
seige          siege
sentance       sentence
seperate       separate
sherbert       sherbet
sieze          seize
similiar       similar
sincerly       sincerely
speach         speech
stagitory      statutory
suggestable    suggestible
supercede      supersede
suprise        surprise
thier          their
tommorrow      tomorrow
tounge         tongue
triathalon     triathlon
ukelele        ukulele
vaccuum        vacuum
vegeterian     vegetarian
villian        villain
Wendesday      Wednesday
wierd          weird
writting       writing

See also

• List of commonly confused homonyms
• List of frequently misused English words
• Wikipedia:List of common misspellings for a larger list