See List of common misspellings in English.

See List of commonly confused homonyms

Other words for which people commonly write one for the other

are: plural of is (I am, he/she is, you are, we are, they are)
our: belonging to us

barley: the grain used to make beer (rhymes with "Harley")
barely: hardly (rhymes with "rarely")

breath: the noun (rhymes with "death")
breathe: the verb (rhymes with "seethe")

collage: something made from a variety of magazine cut-outs mounted on paper (rhymes with "garage")
college: university (rhymes with "knowledge")

corpse: dead body (rhymes with "warps")
corps: army or similar organization (rhymes with "four"); also the plural of "corp" when it's short for "corporation"

coup: act of overthrowing a government (rhymes with "new")
coupe: vehicle (rhymes with "group" in U.S. English, pronounced "koop-ay" elsewhere - the word is in fact French, and has an accented 'e' - coupé)

everyday: routine, commonplace; often used instead of:
every day: daily, once per day

loose: opposite of tight (rhymes with "goose")
lose: opposite of win, gain or find (rhymes with "choose")

now: at the present time (rhymes with "how")
know: be familiar with the facts; be acquainted with; be aware (rhymes with "go")

of: belonging to or somehow connected with; associated with; forming a part of; a certain amount of (rhymes with "love")
off: opposite of on (rhymes with "cough")
've: This is the word "have" as part of a contraction. This sounds like "of" after some words like "could" and "might", but is actually a contraction for "have" (could have, might have). You write: should've, might've, would've, etc.

physics: the laws that govern objects moving in space; related to physical, physiology, physicist, physician (the first syllable sounds like "fizz")
psychic: having ESP; pertaining to the soul; related to psychology, psychiatrist, psyche, psycho, psychedelic, psychopath, psyched (psychic scars) (the first syllable sounds like "sigh")

quite: rather, to an impressive degree (rhymes with "night")
quiet: not very loud (rhymes with "riot")

through: from one end to the other; finished (rhymes with "new")
thorough: complete, exhaustive (rhymes with "burro")

were: past tense of the verb to be (I was, you were) (rhymes with "fur")
where: at what place? (rhymes with "share")
wear: have clothes on; break something down eventually through use (wear out, wear thin, wear and tear) (rhymes with "share")

List of most notable misspellings

• Zenith - arabic zamt misspelled by scribes
• camel-and-needle-eye proverb: translators from Hebrew into Greek confused cable for camel