雷厉风行 léilìfēngxíng swift and decisive Origin Definitions Defs Strokes Stroke Words Sentences Sents 雷 léi noun thunder thunder; the loud noise caused by atmospheric electrical discharge厉 厲 lì adjective severe (bound form) harsh; severe; strict; stern风行 風行 fēngxíng to be popular to become fashionable; to catch on or spread rapidly like the wind