- Incapable of error - Incapable of failure - Sure-fire - Not fallible; not capable of erring; entirely exempt
from liability to mistake; unerring; inerrable. - Not liable to fail, deceive, or disappoint;
indubitable; sure; certain; as, infallible evidence; infallible
success; an infallible remedy. - Incapable of error in defining doctrines touching faith
or morals. See Papal infallibility, under Infallibility.
- Confident - In no doubt - Sure-fire - Assured in mind; having no doubts; free from suspicions
concerning. - Determined; resolved; -- used with an infinitive. - Not to be doubted or denied; established as a fact. - Actually existing; sure to happen; inevitable.