also reenforce, 1580s, "to give fresh strength to," from re- "back, again" + enforce (v.). Originally of persons or military units; of buildings, structures, etc., attested from 1883. Related: Re-enforced; re-enforcing.
reem
re-enact
re-enactment
re-enactor
re-energize
re-enforce
re-enforcement
re-enlist
re-enter
re-entry
re-establish