- (of ideas, allegations, etc) baseless; groundless
- not yet founded or established
WordReference Random House Learner's Dictionary of American English © 2026
un•found•ed /ʌnˈfaʊndɪd/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- not based on fact or on what is real;
without foundation;
groundless:his unfounded fears that his coworkers didn't like him.
un•found•ed
(un foun′did),USA pronunciation adj.
un•found′ed•ly, adv.
un•found′ed•ness, n.
- without foundation;
not based on fact, realistic considerations, or the like:unfounded suspicions. - not established;
not founded:the prophet of a religion as yet unfounded.
- un-1 + found2 + -ed2 1640–50
un•found′ed•ness, n.
- 1. . groundless, idle, false, unjustified, unsubstantiated.
Collins Concise English Dictionary © HarperCollins Publishers::
unfounded /ʌnˈfaʊndɪd/ adj
'unfounded' also found in these entries (note: many are not synonyms or translations):
baseless
- idle
- paranoia
- pretension
- white list
- dogmatism
- faint
- false alarm
- foul
- groundless
- precarious
- untrue