Which words contain a prefix means "again" or "back" and one that means " not"?

Question

Retribution, rehabilitate, unperceived

are these right can some one check these.

Answer 1

Which ones mean what? Let me know specifics, and I'll check your work.

Here's a list of prefixes so you can double-check:
http://guidetogrammar.org/grammar/vocabulary.htm#prefix