Prefix

Question 1

de-

Answer 1

from, down, away, reverse
ex; decode, decrease

Question 2

dis-

Answer 2

not,opposite,reverse away
ex;disagree,disapear

Question 3

ex-

Answer 3

out of, away from, lacking, former
ex; exhale explosion.

Question 4

il-

Answer 4

not
ex;illegal,illogical

Question 5

im-

Answer 5

not without
ex; impossible, improper

Question 6

in-

Answer 6

not,without
ex;inaction,invisible

Question 7

mis-

Answer 7

bad, wrong
ex; mislead, misplace

Question 8

non-

Answer 8

not
ex; nonfiction, nonsense

Question 9

pre-

Answer 9

before
ex; prefix, prehistory

Question 10

pro-

Answer 10

for, forward, before
ex; proactive, profess

Question 11

re-

Answer 11

again, back
ex; react, reappear

Question 12

un-

Answer 12

against, not, opposite
ex; undo, unequal, unusual