Neutral, Formal, Informal 1
afraid
intimidated, scared
joke
jest, kid
delay
postpone, put sth off
work
toil, slog
answer
acknowledge, get back to sb
learn
acquire, pick sth up
expect
anticipate, bargain on sth
achieve
attain, pull sth off
kind
benevolent, sweet
clothes
clothing, gear
finish
complete, wrap sth up
agree
conclude, thrash sth out
give
contribute, chip in
expensive
costly, pricey
long for something
covet, be dying for sth
hate
detest, can't stand
event
incident, business
neutral
formal, informal
fail
founder, get nowhere
man
gentleman, guy
complaint
grievance, gripe
hurry
hasten, get a move on
jail
imprison, lock sb up
find
locate, sniff sb/sth out
material
matter, stuff
important
momentous, big
look
observe, check sth out
information
particulars,info
allow
permit, OK
main
principal, number one
home
residence, place
leave
resign, quit
dirty
soiled, grubby
grief
sorrow, heartache
hit
strike, bash
dare
venture, stick your neck out
confirm
verify, back sb/sth up