
English word impeccable comes from Latin peccare, Latin peccabilis ((Medieval Latin) peccable; liable to sin.), Latin im-
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peccare (Latin)
peccabilis (Latin)
(Medieval Latin) peccable; liable to sin.
im- (Latin)
impeccabilis (Latin)
impeccable (Middle French)
impeccable (English)
Incapable of wrongdoing or sin; immaculate. Perfect, without faults, flaws or errors.