foolproof

From fool +‎ -proof.

• IPA^(key): /ˈfuːl ˌpɹuːf/

• Audio (Southern England)

  (file)

foolproof (comparative more foolproof, superlative most foolproof)

1. (of a device) Protected against, or designed to be proof against, misuse or error.
2. (of an idea or plan) Certain to succeed in all eventualities, or claimed to be so; infallible.

• foolproofly
• foolproofness

• bulletproof
• dummy-proof
• idiot-proof

foolproof (third-person singular simple present foolproofs, present participle foolproofing, simple past and past participle foolproofed)

1. (transitive) To render foolproof.

   We foolproofed the operations.