unfounded

un·found·ed

adjective \ˌən-ˈfau̇n-dəd\

: not based on facts or proof

Full Definition of UNFOUNDED

:  lacking a sound basis :  groundless, unwarranted <an unfounded accusation>

Examples of UNFOUNDED

1. <the accusation proved to be unfounded>

First Known Use of UNFOUNDED

1648

Related to UNFOUNDED

Synonyms

baseless, foundationless, invalid, nonvalid, groundless, unreasonable, unsubstantiated, unsupported, unwarranted

Antonyms

good, hard, just, justified, reasonable, reasoned, substantiated, valid, well-founded, well-grounded

Related Words

illogical, irrational, nonlogical, unconscionable, unsound; fallacious, false, misled, wrong; gratuitous, uncalled-for, unnecessary; flimsy, implausible, misleading, specious, unconvincing, untenable, weak; ill-advised, unreasoned; inconsistent; absurd, asinine, brainless, crackpot, crazy, fatuous, foolish, half-witted, harebrained, meaningless, nonsensical, preposterous, senseless, silly, simpleminded, stupid, unwise; insane, lunatic, mad, nutty, wacky (also whacky)

Near Antonyms

certified, validated, verified; confirmed, corroborated; informed, logical, rational; commonsense, sane, sensible, sober, wise; actual, genuine, real, true; certain, sure; clear, cogent, compelling, convincing, credible, persuasive, plausible, satisfying, solid, sound

Rhymes with UNFOUNDED

confounded, unbounded, well-founded, well-grounded, well-rounded