faultless russian
безоши́бочный
unerring, faultless, correct, exact
unmistakable
безотка́зный
faultless, unfailing, reliable
безоши́бочность
faultlessness, correctness, exactitude
беспоро́чный
blameless, faultless, irreproachable
unerring, faultless, correct, exact
unmistakable
faultless, unfailing, reliable
faultlessness, correctness, exactitude
blameless, faultless, irreproachable