English words evolved from a variety of other languages. Worse, how we pronounce words has continued to change, so phonetic spelling is problematic. Yes, once we really did pronounce the k and g sounds in knight. The following is a list of words commonly misspelled or confused with other words.
[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M]
[N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]
– A –
absence
accept
accomplish
accommodation
accumulate
accurate
achievement
acquaintance
across
advertisement
advice
advise
affect
aggravate
agitator
a lot
answer
appropriate
archaeology
argument
article
athlete
attendance
auxiliary
available
– B –
beautiful
beginning
behavior
beneficial
breath
breathe
business
– C –
calendar
carcass
ceiling
certainly
chameleon
chief
choice
choose
chose
commercial
committee
competition
concentrate
congratulate
conscience
conscientious
conscious
consequently
convenience
counselor
criticism
criticize
– D –
definitely
desperate
describe
develop
different
difference
disappoint
disease
doesn’t
during
– E –
effect
eighth
embarrass
encyclopedia
entrance
envelope
environment
especially
exaggerate
except
existence
expedient
experience
experiment
explanation
extremely
– F –
familiar
fascinate
February
foreign
– G –
genealogy
genius
government
grammar
guarantee
guild
guillotine
– H –
harass
height
– I –
idiosyncrasy
immediate
important
independence
integration
intellectual
interest
interesting
interfere
interrupt
irrelevant
– J –
jewelry
judgment
– K –
knowledge
– L –
laboratory
leisure
license
liquorice
loneliness
loose
lose
– M –
maintenance
marriage
mathematics
medieval
mischief
mischievous
misspell
– N –
necessary
niece
ninety
ninth
– O –
occasion
occurrence
opinion
opportunity
original
optimist
– P –
particular
pastime
perform
perhaps
phony
physical
possess
prefer
prejudiced
prevalent
privilege
probably
pronunciation
psychology
pursue
– Q –
quiet
quite
– R –
realize
recommend
restaurant
rhythm
ridiculous
– S –
scenery
schedule
secretary
separate
similar
since
sincerely
speech
stationary
stationery
straight
strength
surprise
– T –
temperature
through
thorough
tomorrow
– U –
unnecessary
unusually
– V –
– W –
Wednesday
weird