This lesson consists of words that can be categorized according to the prefixes re- (which means again) and un- (which means not).  If you see a re or un at the beginning of a word, and they don't mean again or not, then they are not a prefix.  Words that don't have prefixes in this lesson are oddballs.  (For example, read doesn't mean to do ad  again. But reread does mean to read again.)

Sort words beginning with the prefix "re-" under "re-".

Sort words beginning with the prefix "un-" under "un-".

CATEGORIES:  re-          un-

rebuild - unable - recopy - unbeaten - recycle - unwrap - refill - unselfish - refinish - remodel - retrace - uncle - unhappy - unkind - retake - return - review - unpack - unfair - uneven - rewrite - reptile - unequal - unbutton