Word: 不快 (bùkuài) 不快 dictionary entry bùkuài unhappy; in low spirits; not sharp Full dictionary entry for 不快 Example sentences using 不快 2 sentences, showing page 1 of 1. 临阵磨枪，不快也光 línzhènmóqiāng, búkuài yě guāng sharpening the spear on the eve of battle: if not sharp, at least shiny 镰刀不快了，得磨一磨。 Liándāo búkuài le, de mó yì mó. The sickle isn't sharp anymore; it needs sharpening.