This is for suffixes and prefixes

1. real (not real)

2. approve (to turn down; to vote against; to oppose)

3. apply (to apply wrongly)

4. caution (to warn ahead of time; to ensure safety ahead of time)

5. turn (to turn back; go back; give back)

6. hope (without hope)

7. pass (capable of being passed; able to pass)

8. involve (act of being involved; or result of being involved)

9. joy (filled with joy)

10. bright (to make bright)

here are your choices:

un-

-ful

-able

-en

mis-

dis-

re-

pre-

-less

-ment