[mass noun]physical strength and good health 体力;精力 ■effort, energy, and enthusiasm 努力;活力;热情 they set about the new task with vigour. 他们以饱满的热情开始新的任务。 ■strong, healthy growth of a plant (植物)茁壮成长
派生 vigourless adjective 语源
Middle English: from Old French, from Latin vigor, from vigere 'be lively'