flinty

adj (-ier, -iest) 1 made of flint; very hard, like flint 燧石的; 燧石般坚硬的. 2 cruel; unyielding 冷酷的; 坚定不移的: a flinty heart 铁石心肠.

flier, flier (also flyer), flies, flight, flight attendant, flight lieutenant, flight path, flight sergeant, flight simulator, flight-deck, flight-recorder, flightless, flighty, flimsily, flimsiness, flimsy, flinch, fling, flint, flintlock, flip, flip side, flip-flop, flippancy, flippant, flippantly, flipper, flipping, flirt, flirtation, flirtatious, flit, float, floating, flock, floe, flog, flogging, flood, flood-tide,