1. (adj)infallible incapable of failure or error Antonyms: unreliable, undependable, errant, error-prone, fallible, erring, weak
Synonyms, Thesaurus & Antonyms of 'infallible'
English Synonyms and Antonyms
1. infallible That is necessary which must exist, occur, or be true; which in the nature of things can not be otherwise. That which is essential belongs to the essence of a thing, so that the thing can not exi Synonyms: necessary, essential, infallible, required, unavoidable, indispensable, needed, requisite, undeniable, inevitable, needful Antonyms: casual, needless, optional, useless, contingent, non-essential, unnecessary, worthless
Synonyms for infallible 
