S 皮疹；疹 an area of red spots on a person's skin, caused by an illness or a reaction to sth

　heat ～　热疹
　nettle ～　荨麻疹

　I woke up covered in a rash.　我醒来时长了一身疹子。

　太急速的；鲁莽的；轻率的　too hasty;overbold;done, doing things, without enough thought of the consequence

　～ decision　轻率的决定
　～ promise　轻诺
　～ politician　急躁的政客
　～ young man　莽撞的小伙子

　This is what happens when you make rash decisions.　这就是你贸然做决定的后果。
　Her rash marriage proved unhappy.　她轻率结婚，很不幸福。
　Think twice before doing anything rash.　不要草率行事，要三思而行。
　Don't be rash in making your decision.　别轻率做出决定。

　［派生词］ rashly adv.轻率地‖rashness n.急躁，鲁莽