comfortable
uncomfortable
visible
invisible
safe
unsafe
usual
unusual
friendly
unfriendly
real
unreal
fair
unfair
possible
impossible
correct
incorrect
responsible
irresponsible
polite
impolite
likely
unlikely
dependent
independent
surprising
unsurprising
legible
illegible
satisfied
unsatisfied
believable
unbelievable
honest
dishonest
kind
unkind
healthy
unhealthy
legal
illegal
tidy
untidy
patient
impatient
interesting
uninteresting