early 14c., "to reprimand, reprove; chide, scold," from Anglo-French rebuker "to repel, beat back," Old French rebuchier, from re- "back" (see re-) + buschier "to strike, chop wood," from busche (French bûche) "wood," from Proto-Germanic *busk- (see bush, n.). Related: Rebuked; rebuking.

early 15c., "a reproof, reprimand," from rebuke, v..