foolproof

== English == === Etymology === From fool +‎ -proof. === Pronunciation === IPA(key): /ˈfuːl ˌpɹuːf/ === Adjective === foolproof (comparative more foolproof, superlative most foolproof) Of a device: protected against, or designed to be proof against, misuse or error. Of an idea or plan: certain to succeed in all eventualities, or claimed to be so; infallible. ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === Verb === foolproof (third-person singular simple present foolproofs, present participle foolproofing, simple past and past participle foolproofed) (transitive) To render (something) foolproof.