The following list, of about 350 words, is based on documented lists of the top 100, 200, or 400 most commonly misspelled words, rather than listing every conceivable misspelled word. Each word is followed by examples of misspellings:

A–B

  • absence – absense, absance
  • acceptable – acceptible
  • accidentally/accidently – accidentaly
  • accommodate – accomodate, acommodate
  • achieve – acheive
  • acknowledge – acknowlege, aknowledge
  • acquaintance – acquaintence, aquaintance
  • acquire – aquire, adquire
  • acquit – aquit
  • acreage – acrage, acerage
  • address – adress
  • adultery – adultary
  • advisable – adviseable, advizable
  • affect – effect
  • aggression – agression
  • aggressive – agressive
  • allegiance – allegaince, allegience, alegiance
  • almost – allmost
  • a lot – alot (must be two words)
  • amateur – amatuer, amature
  • annually – anually, annualy
  • apparent – apparant, aparent
  • arctic – artic
  • argument – arguement
  • atheist – athiest
  • awful – awfull, aweful
  • because – becuase
  • becoming – becomeing
  • beginning – begining
  • believe – beleive
  • bellwether – bellweather
  • buoy/buoyant – bouy/bouyant
  • business – buisness

C–D

  • calendar – calender
  • camouflage – camoflage, camoflague
  • capitol – capital (both words exist, but are distinct)
  • Caribbean – Carribean
  • category – catagory
  • caught – cauhgt, caugt
  • cemetery – cemetary, cematery
  • changeable – changable
  • chief – cheif
  • colleague – collaegue, collegue
  • collectible – collectable
  • column – colum
  • coming – comming
  • committed – commited, comitted
  • concede – conceed
  • congratulate – congradulate
  • conscientious – consciencious
  • conscious – concious, consious
  • consensus – concensus
  • controversy – contraversy
  • coolly – cooly
  • daiquiri – dacquiri, daquiri
  • deceive – decieve
  • definite – definate, definit
  • definitely – definitly, definately, defiantly
  • desperate – desparate
  • difference – diffrence
  • dilemma – dilema
  • disappoint – disapoint
  • disastrous – disasterous
  • drunkenness – drunkeness
  • dumbbell – dumbell

E–H

  • embarrass – embarass
  • equipment – equiptment (wrong in numerous webpages)
  • exceed – excede
  • exhilarate – exilerate
  • existence – existance
  • experience – experiance
  • extreme – extreem
  • fascinating – facinating
  • fiery – firey
  • fluorescent – flourescent
  • foreign – foriegn
  • friend – freind
  • fulfil – fullfil (American: fulfill)
  • gauge – guage
  • grateful – gratefull, greatful
  • guarantee – garantee, garentee, garanty
  • guidance – guidence
  • harass – harrass
  • height – heighth, heigth
  • hierarchy – heirarchy
  • hors d’oeuvres – hors derves, ordeurves
  • humorous – humerous
  • hygiene – hygene, hygine, hiygeine, higeine, hygeine
  • hypocrisy/hypocrite – hipocrit

I–K

  • ignorance – ignorence
  • imitate – immitate
  • immediately – imediately
  • independent – independant
  • indispensable – indispensible
  • inoculate – innoculate
  • intelligence – inteligence, intelligance
  • jewelry (UK: jewellery) – jewelery
  • judgment – judgement (issue in the U.S.)
  • kernel – kernal, distinct from homophone colonel

L–O

  • leisure – liesure
  • liaison – liason
  • library – libary, liberry
  • license – lisence (US always license, UK noun licence)
  • lightning – lightening
  • lose – loose
  • maintenance – maintainance, maintnance
  • medieval – medeval, medevil, mideval
  • memento – momento
  • millennium – millenium, milennium
  • miniature – miniture
  • minuscule – miniscule
  • mischievous – mischievious, mischevous, mischevious (The spelling “mischievious” and the corresponding pronunciation are still considered non-standard despite being current and existing since at least the th century.)
  • misspell – mispell, misspel
  • necessary – neccessary, necessery
  • niece – neice
  • neighbor – nieghbor
  • noticeable – noticable
  • occasion – occassion
  • occasionally – occasionaly, occassionally
  • occurrence – occurrance, occurence
  • occurred – occured
  • omission – ommision, omision
  • original – orignal
  • outrageous – outragous

P–Q

  • parliament – parliment
  • pastime – passtime, pasttime
  • perceive – percieve
  • perseverance – perseverence
  • personnel – personell, personel
  • plagiarize – plagerize
  • playwright – playright, playwrite
  • possession – posession, possesion
  • potatoes – potatos
  • precede – preceed
  • presence – presance
  • principle – principal
  • privilege – privelege, priviledge
  • professor – professer
  • promise – promiss
  • pronunciation – pronounciation
  • proof – prufe
  • prophecy (as noun) – prophesy (valid as verb)
  • publicly – publically
  • quarantine – quarentine
  • queue – que (from Bar-B-Que)
  • questionnaire – questionaire, questionnair

R–S

  • readable – readible
  • really – realy
  • receive – recieve
  • receipt – reciept
  • recommend – recomend, reccommend
  • referred – refered
  • reference – referance, refrence
  • relevant – relevent, revelant
  • religious – religous, religius
  • repetition – repitition
  • restaurant – restarant, restaraunt
  • rhyme – rime, ryme
  • rhythm – rythm, rythem
  • secretary – secratary, secretery
  • seize – sieze
  • separate – seperate
  • sergeant – sargent
  • similar – similer
  • skilful – skilfull (American: skillful)
  • speech – speach, speeche (archaic)
  • successful – succesful, successfull, sucessful
  • supersede – supercede
  • surprise – suprise, surprize

T–Z

  • their – there, they’re
  • tomatoes – tomatos
  • tomorrow – tommorrow
  • twelfth – twelth
  • tyranny – tyrany
  • underrate – underate
  • until – untill
  • upholstery – upholstry
  • usable/useable – usible
  • vacuum – vaccuum, vaccum, vacume
  • vehicle – vehical