Adjacent Words

foolproof definitions

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WordNet (r) 3.0 (2005)

adj
1: not liable to failure; "a foolproof identification system"; "the unfailing sign of an amateur"; "an unfailing test" [syn: foolproof, unfailing] v
1: proof against human misuse or error; "foolproof this appliance" [syn: goofproof, goof-proof, foolproof]

Merriam Webster's

adjective Date: 1902 so simple, plain, or reliable as to leave no opportunity for error, misuse, or failure <a foolproof plan>

Oxford Reference Dictionary

adj. (of a procedure, mechanism, etc.) so straightforward or simple as to be incapable of misuse or mistake.

Collin's Cobuild Dictionary

Something such as a plan or a machine that is foolproof is so well designed, easy to understand, or easy to use that it cannot go wrong or be used wrongly. The system is not 100 per cent foolproof... I spent the day working out a foolproof plan to save him. ADJ

Moby Thesaurus

adaptable, airtight, ballproof, bombproof, bulletproof, burglarproof, certain, convenient, corrosionproof, dampproof, dependable, ductile, feasible, fire-resisting, fireproof, flameproof, flexible, guaranteed, handy, hermetic, holeproof, impervious to, infallible, leakproof, malleable, manageable, maneuverable, noiseproof, pliable, pliant, practical, proof, proof against, punctureproof, reliable, resistant, rustproof, safe, shatterproof, shellproof, soundproof, sure, sure-fire, tight, tractable, trustworthy, unfailing, untroublesome, warranted, watertight, weatherproof, wieldable, wieldy, yielding