Unfailable

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    infallible obsolete

    "If then we believe this unfailable word of truth, who would not be content to mourn awhile, that he may rejoice for ever?"

  2. 2
    Impossible to fail

    "an unfailable test"

Example

More examples

"If then we believe this unfailable word of truth, who would not be content to mourn awhile, that he may rejoice for ever?"

Etymology

From un- + fail + -able.

More for "unfailable"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.