infallible

1 ENTRIES FOUND:
infallible /ɪnˈfæləbəl/ adjective
infallible
/ɪnˈfæləbəl/
adjective
Britannica Dictionary definition of INFALLIBLE
1 
: not capable of being wrong or making mistakes : not fallible
2 
: certain to work properly or succeed

— infallibility

/ɪnˌfæləˈbɪləti/ noun [noncount]

— infallibly

/ɪnˈfæləbli/ adverb