forearm

v 1 [Tn usu passive 通常用於被动语态] prepare (oneself/sb) in advance for possible danger, attack, etc; arm beforehand 使（自己[某人]）做好准备（以防危险、 攻击等）; 预先武装. 2 (idm 习语) forewarned is forearmed => forewarn.

forborne, force, force majeure, force sb. into sth., force-feed, forced, forced labour, forced landing, forced march, forceful, forcefully, forcefulness, forcemeat, forceps, forcible, forcibly, ford, fordable, fore, fore-, forebear (also forbear), forebode, foreboding, forecast, forecaster, forecastle (also focsle), foreclose, foreclosure, forecourt, foredoomed, forefather, forefathers, forefinger, forefoot, forefront, foregoing, foregone, foreground, forehand, forehead,