Synonyms of impeccable

Adjective

1. faultless, immaculate, impeccable, perfect (vs. imperfect)

usage: without fault or error; "faultless logic"; "speaks impeccable French"; "timing and technique were immaculate"; "an immaculate record"

2. impeccable, virtuous (vs. wicked)

usage: not capable of sin

Definition and meaning of impeccable (Dictionary)