Word.ws English Dictionary

fails closed

fails closed is the third-person singular simple present indicative of fail closed.

Meaning of fail closed

Verb

fail closed (third-person singular simple present fails closed, present participle failing closed, simple past and past participle failed closed)

  1. Of an access control system: to automatically block all traffic in the case of a failure. For example, an electronic safe becoming impossible to unlock in the event of a power outage.
    • Coordinate term: fail open

Questions about fails closed

What is fails closed the third-person singular simple present indicative of?
Fails closed is the third-person singular simple present indicative of fail closed.

Words near fails closed in the dictionary

  1. failover
  2. failovers
  3. failproof
  4. fails
  5. fails at life
  6. fails closed
  7. fails fast
  8. fails open
  9. fails out
  10. fails over
  11. fails safe

Source and license

Adapted from Wiktionary: fails closed (page history and authors); fail closed (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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