able / capable
accident / incident
accurate / exact / precise
ache / pain / hurt
actual / current / present
administrator / boss / manager
adverse / averse
advice / advise
affect / effect
afraid / scared / frightened
after / later
agenda / itinerary / schedule
ago / back / before
aid / assist / help
aim / goal / objective
alien / foreigner / stranger
alive / life / live
already / yet
all / whole / every
all of / each of
all ready / already / all right / alright
allow / let / permit
allude / elude
almost / mostly / nearly
alone / lonely / only
also / as well / too
altar / alter
although / though / even though
among / between
amoral / immoral
amount / number / quantity
ancient / antique
angry / upset
another / other / others
answer / reply / respond
any / some
apartment / flat / studio
apologize / sorry
apology / excuse
appraise / apprise
arrive / come / get / reach
as far as / as long as / as soon as
assure / ensure / insure
automobile / car / vehicle
await / hope / expect / wait
award / reward / prize
awkward / embarrassing
baggage / luggage
beach / coast / shore
beautiful / pretty
become / get / turn
been / gone
before / in front of / opposite / across from
beg / plead
begin / start
belong to / belong with / belong in
below / under / beneath / underneath
beside / besides
big / large
big, small, long, short, tall, huge, and tiny
bill / invoice / receipt
blanket / comforter / quilt
borrow / lend / loan / owe
bother / disturb
bravery / courage
bring / take
bring up / grow up
Britain / England / the U.K.
broad / wide
by / until
can / could / able to
capital / capitol
carpet / mat / rug
ceiling / roof
chance / possibility / opportunity
change / switch
chauffeur / driver
city / downtown / town
classic / classical
clever / intelligent / smart
close / near / next
close / shut
cloth / clothes / clothing
collect / gather
come back / go back / get back
compliment / complement
concern / concerned / concerning
confident / confidant / confidence
continual / continuous
convince / persuade
could / should / would
council / counsel
critic / critical / criticism / critique
cure / treat / heal / recover
custom / habit
deadly / fatal / lethal
decent / descent / dissent
delay / late / postpone
deny / refuse / reject / decline
defect / fault / flaw
definitely / definitively
despite / in spite of
die / died / dead
difficult / hard
dilemma / quandary
dinner / supper / meal / snack
dirt / earth / soil
dirty / messy
disability / handicap / impairment
discover / find out / notice / realize
discreet / discrete
disease / illness
disinterested / uninterested
distinct / distinctive
do / make
dress / dressed / wear
during / while / meanwhile / meantime
early / soon
earn / gain / win
e.g. / i.e.
economic / economical
effective / efficient
either / neither
electric / electrical / electronic
empathy / sympathy
employees / staff
end / finish
enough / too
enquire / inquire
especially / specially
every day / everyday
ex- / former / previous
explore / exploit
extend / expand
famous / infamous
farther / further
fee / fare / tax
female / feminine / woman
few / little / less / fewer
fit / match / suit
floor / ground
for / since
forest / jungle / wood / woods
fun / funny
girl / lady / woman
good / well
good evening / good night
gratuity / tip
guarantee / warranty
gut / guts
hard / hardly
have / have got
have to / must / need to
haven’t / don’t have
hear / listen
hijack / kidnap
historic / historical
holiday / vacation
hope / wish
hopefully / thankfully
hostel / hotel / motel
house / home
how about…? / what about…?
human / humankind / human being / man / mankind
hundred / hundreds
I / my / me / mine / myself ?
if I was… / if I were…
if / whether
ignore / neglect
ill / sick
impending / pending
imply / infer
in / into / inside / within
in / on / at
in time / on time
incite / insight
income / salary / wage
Indian / indigenous / Native American
inhabit / live / reside
intend / tend
interested / interesting
interfere / intervene
its / it’s
job / work / career
just / only
kinds / types / sorts
know / meet
last / latest
last / past
late / lately
lay / lie
like / as
little / small
look / see / watch
lose / loose
lose / miss
made of / made from
marriage / married / wedding
may / might
moral / morale
Mr. / Mrs. / Ms. / Miss
music / song
nausea / nauseous / queasy
north / northern
notable / noticeable
ocean / sea / lake / pond
of / from
oppress / suppress / repress
overtake / take over
pass away / pass out
pass the time / spend time
peak / pique
persons / peoples
poison / venom
politics / policy
poor / pore / pour
pray / prey
principal / principle
problem / trouble
quiet / silent
raise / rise / arise
regard / regardless / regards
regretful / regrettable
relation / relationship
remember / remind / recall / recollect
replace / substitute
resolve / solve
review / revise
rob / thief / steal
safety / security
sell / sale
say / tell / speak
scream / shout
sensible / sensitive
shade / shadow
so / such
so / very / a lot
some time / sometime / sometimes
stuff / things
such as / as such
suppose / supposed to
than / then
think about / think of
tide / waves
till / until
to / for
too / very
travel / trip / journey
used to / be used to
wake / awake / sleep / asleep
wander / wonder
wary / weary
what / which
which / that
who / whom
will / would
worse / worst
year-old / years old
