used in questions instead of ‘devil’ to show that you are annoyed or surprised （用于问句代替 devil，表示烦恼或吃惊）究竟，到底 - (North American English)
used when you are saying how attractive, etc. somebody is （某人）…极了，太…了，多么…啊 cute as the dickens 可爱极了
Word Originlate 16th cent.: a euphemism for ‘devil’, probably a use of the surname Dickens.