foolproof

/หˆfuหl หŒpษนuหf/

IPA: /F UW1 L P R UW0 F/

verb
  1. 1

    To make foolproof.

    โ€œWe foolproofed the operations.โ€

adjective
  1. 1

    For a device: protected, or designed to be proof against misuse or error.

  2. 2

    For an idea or plan: infallible, or bulletproof.

Source: https://en.wiktionary.org/wiki/foolproof