1. infallible

adjective. ['ˌɪnˈfæləbəl'] incapable of failure or error.


  • unerring
  • foolproof
  • unfailing
  • inerrable


  • inconstant
  • exhaustible
  • erring
  • error-prone


  • infallibilis (Latin)

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Rhymes with Infallible

  • valable

How do you pronounce infallible?

Pronounce infallible as ˌɪnˈfæləbəl.

US - How to pronounce infallible in American English

UK - How to pronounce infallible in British English

Sentences with infallible

1. Adjective
They regard God as the highest authority and do not believe any human authority is infallible.

Quotes about infallible

1. Joy is the infallible sign of the presence of God.
- Pierre Teilhard de Chardin

2. By starving the sensibility of our pupils we only make them easier prey to the propagandist when he comes. For famished nature will be avenged and a hard heart is no infallible protection against a soft head.
- C.S. Lewis, The Abolition of Man