Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
Negative prefixes: im-, in-, un-
0
%
0
0
0
Back
Restart
secure
insecure
Oops!
Okay!
Polite
impolite
Oops!
Okay!
prepared
unprepared
Oops!
Okay!
correct
incorrect
Oops!
Okay!
patient
impatient
Oops!
Okay!
usual
unusual
Oops!
Okay!
Believable
unbelievable
Oops!
Okay!
mobile
immobile
Oops!
Okay!
real
unreal
Oops!
Okay!
sure
unsure
Oops!
Okay!
able
unable
Oops!
Okay!
expensive
inexpensive
Oops!
Okay!
happy
unhappy
Oops!
Okay!
possible
impossible
Oops!
Okay!
comfortable
uncomfortable
Oops!
Okay!
frequent
infrequent
Oops!
Okay!
friendly
unfriendly
Oops!
Okay!
perfect
imperfect
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies