failproof

Fetched 2026-10-26 (cache).

Synonyms: nailproof, foolproof, rainproof, airproof, ballproof, oilproof

Antonyms: nailproof, foolproof, rainproof, airproof, ballproof, oilproof

Related words from Datamuse; suggestions, not definitions.

Adjective

1. [[resistant|Resistant]] to [[failure]]; that cannot go [[wrong]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.