Infallible

Adjective

 * 1) Without fault or weakness; incapable of error or fallacy.
 * He knows about many things, but even he is not infallible.
 * 1) certain, sure.

Adverbs for Infallible
unctuously; smugly; pompously; arrogantly; sapiently; sagaciously; practically; usually; consciously; reputably; notoriously; admittedly; apparently; supposedly; avowedly; bumptiously; maddeningly; gallingly; offensively; ostentatiously; proudly; blustering-ly; swaggeringly; curiously.

Thesaurus
absolute, acceptable, agreeable, beyond all praise, certain, chaste, close, constant, correct, defectless, delicate, dependable, direct, effective, efficacious, efficient, even, exact, express, faithful, faultless, fine, flawless, foolproof, handy, helpful, ideal, immaculate, impeccable, indefectible, indefective, inerrable, inerrant, irreproachable, just right, mathematical, micrometrically precise, microscopic, nice, oracular, peerless, perfect, pinpoint, precise, pure, refined, reliable, religious, religiously exact, rigid, rigorous, satisfactory, satisfying, scientific, scientifically exact, secure, severe, sinless, spotless, square, stainless, strict, subtle, sure, surefire, taintless, unadulterated, unblemished, uncontaminated, undeceivable, undeviating, unerring, unfailing, unfaultable, unmistaken, unmixed, unspotted, untainted, useful

Etymology
From infallibilis:, from  in-: + fallibilis:. Compare French infaillible:.

Translations

 * Armenian: անսխալական
 * Bosnian:
 * Croatian:
 * Czech:
 * Danish: ufejlbarlig
 * Dutch: onfeilbaar
 * Finnish:
 * French:


 * German:
 * Italian:
 * Norwegian: ufeilbarlig
 * Portuguese: infalível
 * Russian: непогрешимый, безошибочный
 * Serbian:
 * Spanish:
 * Turkish: yanılmaz, şaşmaz, mutlak, muhakkak