Antonyms of adj fallible

2 senses of fallible

Sense 1
fallible (vs. infallible) -- (likely to fail or make errors; "everyone is fallible to some degree")

infallible (vs. fallible) -- (incapable of failure or error; "an infallible antidote"; "an infallible memory"; "the Catholic Church considers the Pope infallible"; "no doctor is infallible")
        => foolproof, unfailing -- (not liable to failure; "a foolproof identification system"; "the unfailing sign of an amateur"; "an unfailing test")
        => inerrable, inerrant, unerring -- (not liable to error; "the Church was...theoretically inerrant and omnicompetent"-G.G.Coulton; "lack an inerrant literary sense"; "an unerring marksman")

Sense 2
fallible, frail, imperfect, weak -- (wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings; "I'm only a fallible human"; "frail humanity")

INDIRECT (VIA human) -> nonhuman -- (not human; not belonging to or produced by or appropriate to human beings; "nonhuman primates such as chimpanzees")

Similarity of adj fallible

2 senses of fallible

Sense 1
fallible (vs. infallible) -- (likely to fail or make errors; "everyone is fallible to some degree")
       => errant -- (straying from the right course or from accepted standards; "errant youngsters")
       => erring, error-prone -- (capable of making an error; "all men are error-prone")
       => undependable, unreliable -- (liable to be erroneous or misleading; "an undependable generalization")
       => weak -- (likely to fail under stress or pressure; "the weak link in the chain")

Sense 2
fallible, frail, imperfect, weak -- (wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings; "I'm only a fallible human"; "frail humanity")
       => human (vs. nonhuman) -- (having human form or attributes as opposed to those of animals or divine beings; "human beings"; "the human body"; "human kindness"; "human frailty")