Meaning

originEtymology tree Proto-Italic *wre- Latin re-der. Old French re-bor. Middle English re- English re- English inforce English reinforce Proto-Indo-European *-mn̥ Proto-Indo-European *-mn̥tom Proto-Italic *-mentom Latin -mentum Old French -mentbor. Middle English -ment English -ment English re(inforcement) English -o English reo From re(inforcement) + -o.

Etymology from Wiktionary, CC BY-SA 3.0