Definition of "re-" in English

prefix

1. again, anew

   • re- + new → renew (“to make something new again”)
   • re- + commit → recommit (“to commit an act again”)
   • re- + heat → reheat (“to heat something that has cooled off”)

2. a completive or intensification of the base; up, a-, out

   • reletter, relead, rebronze (examples from: )

3. back, backward

   • reject, reply, resist