Word.ws English Dictionary

failproof

failproof adjective: resistant to failure; that cannot go wrong.

Adjective

failproof (comparative more failproof, superlative most failproof)

  1. Resistant to failure; that cannot go wrong.
    • Near-synonyms: foolproof, idiot-proof

Synonyms of failproof

Forms of failproof

comparativemore failproof
superlativemost failproof

Origin of failproof

From fail + -proof.

Questions about failproof

What does failproof mean?
Failproof means resistant to failure; that cannot go wrong.
What part of speech is failproof?
Failproof is an adjective.

Words near failproof in the dictionary

  1. failles
  2. Failor
  3. Failors
  4. failover
  5. failovers
  6. failproof
  7. fails
  8. fails at life
  9. fails closed
  10. fails fast
  11. fails open

Source and license

Adapted from Wiktionary: failproof (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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