Meanings
verbfail safe (third-person singular simple present fails safe, present participle failing safe, simple past and past participle failed safe)
present singular third person fails safe · participle present failing safe · participle past failed safe · past failed safe
- alternativeintransitiveAlternative form of fail-safe (verb with differing inflections)
Anyone with the remotest knowledge of railway signalling knows that it always fails safe.
2021 November 17, Christian Wolmar, “Misleading statements lead to ill-informed speculation”, in RAIL, number 944, page 44
Cite this entry
APA
fail safe. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/fail%20safe
MLA
“fail safe.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fail%20safe. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “fail safe,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/fail%20safe.
Source: fail safe on Wiktionary, CC BY-SA 4.0.