| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | unerring, dependable |
| Synonyms: | acceptable, accurate, agreeable, apodictic, authoritative, certain, correct, effective, effectual, efficacious, efficient, exact, faultless, flawless, foolproof, handy, helpful, impeccable, incontrovertible, inerrable, inerrant, omniscient, perfect, positive, reliable, satisfactory, satisfying, sure, surefire, true, trustworthy, unbeatable, undeceivable, unfailing, unimpeachable, unquestionable, useful |
| Antonyms: | erring, fallible, faulty, imperfect |