adj. 1 unerring, faultless, flawless, perfect, oracular, unmistaken The infallible logic of computers sometimes defeats their users 2 unfailing, dependable, sure, secure, certain, reliable, foolproof The vaccination provides infallible protection against the virus
INFALLIBLE
Meaning of INFALLIBLE in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012