- impeccable⇄adj. 1. faultless; irreproachable.
Ex. impeccable manners, an impeccable appearance. Sir John is impeccable, a paradigm of the gentleman-soldier (Harper's).
2. not to be doubted; unimpeachable.
Ex. According to impeccable sources, the - impeccable⇄adv. impeccably.
- impeccable⇄impeccable, adjective, noun.
- impeccable⇄noun a person who is impeccable.