early 14c., rebuken, "to reprimand, reprove directly and pointedly; 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 a West Germanic *busk "bush, thicket" (see bush (n.)). Related: Rebuked; rebuking; rebukingly.
early 15c., "a reproof for fault or wrong, a direct reprimand," also "an insult, a rebuff," nd in the now archaic sense of "a shame, disgrace," from rebuke (v.). From mid-15c. as "a setback, a defeat."