Adjective: infallible in'fa-lu-bul
- Incapable of failure or error
"the Catholic Church considers the Pope infallible"; "no doctor is infallible"; "an infallible antidote"; "an infallible memory"
See also: foolproof, idiot-proof [informal], inerrable, inerrant, unerring, unfailing
Antonym: fallible
Encyclopedia: Infallible