If you are discreet, you are polite and careful in what you do or say, because you want to avoid embarrassing or offending someone. (言行) 谨慎的
adjective [原级] 谨慎的，周到的；小巧的，不引人注意的
They were gossipy and not always discreet. 他们爱说闲话，而且不总是言语谨慎。
