Words related to rush
late 14c., recusen, "to decline, refuse," especially "reject another's authority or jurisdiction over oneself as prejudiced," from Old French recuser (13c.) and directly from Latin recusare "make an objection against; decline, refuse, reject; be reluctant to," from re- (see re-) + causa (see cause (n.)). Specifically, in law, "reject or challenge (a judge or juror) as disqualified to act." The word now is used mostly reflectively. Related: Recused; recusing; recisative.
early 15c., "the dodging movements of a hunted animal" (a sense now obsolete); 1620s as "a trick, a stratagem, an artifice," from Old French ruse, reuse "diversion, switch in flight; trick, jest" (14c.), a noun from reuser "to dodge, repel, retreat; deceive, cheat," which is from Latin recusare "make an objection against; decline, refuse, reject; be reluctant to" (see recuse; also compare rush (v.)).
It also has been proposed that the French word may be from Latin rursus "backwards," or a Vulgar Latin form of refusare. Johnson calls it, "A French word neither elegant nor necessary."
The verb ruse was in Middle English (rusen), mid-14c. as "drive (someone) back in battle," also "retreat, give ground, withdraw;" late 14c., of game animals "travel so as to elude pursuit." The noun also was used in Middle English in the sense of "roundabout course taken by a hunter in pursuit of prey."
also bullrush, popular name for tall rush-like plants growing in or near water (in Biblical use, the Egyptian papyrus), mid-15c., bolroysche, from rush (n.1); the signification of bull is doubtful.