idiot-proof adjective 1verb 1forms 5 adjective1 •(informal, humorous) Incapable of being misused even by the most stupid or careless of users.I tell you, this scheme is idiot-proof! It can't go wrong. verb1 •To render something idiot-proof. formsidiot-proofed · idiot-proofing · idiot-proofs · more idiot-proof · most idiot-proof
