RE-
prefix 1 attachable to almost any verb or its derivative, meaning: a once more; afresh, anew. B back; with return to a previous state. 2 (also red- before a vowel, as in redolent) in verbs and verbal derivatives denoting: a in return; mutually (react). B opposition (resist). C behind or after (relic). D retirement or secrecy (recluse). E off, away, down (recede; relegate; repress). F frequentative or intensive force (redouble; resplendent). G negative force (recant; reveal). [latin] usage in sense 1, a hyphen is normally used when the word begins with e (re-enact), or to distinguish the compound from a more familiar one-word form (re-form = form again).