【記】perturb ( v.使感到不安；打擾 )

imperturbable adj.冷靜沉著的；精神集中的＝impassive
【類】chary:caution＝imperturbable:composure
謹慎的對謹慎＝鎮靜的對鎮靜
【反】restive ( adj.難控製的；焦躁的 ) ；ticklish ( adj.易發脾氣的 ) ；testiness ( n.暴躁 ) ---> imperturbability ---> volatility ( n.易變性 )