foolproof
verb
1 foolproof
Proof against human misuse or error:
— Foolproof this appliance.
synonyms: goof-proof, goofproof.
adjective
1 foolproof
Not liable to failure:
— A foolproof identification system.
synonym: unfailing.
Moby thesaurus: adaptable, airtight, ballproof, bombproof, bulletproof, burglarproof, certain, convenient, corrosionproof, dampproof, dependable, ductile, feasible, fire-resisting, fireproof, flameproof, flexible, guaranteed, handy, hermetic ... show more.
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