Synonyms|288Antonyms|134|Broader|5Narrower|7Related|1.5k

20 entries under unfounded topic. ×

23
baseless(adjective, reason, poor, foolish, true)
10
wanton(adjective, careless, cruel, unwarranted, malicious)
9
unsupported(adjective, reason, unwarranted, untrue, justification)
7
ungrounded(adjective, poor, negative, error, unwarranted)
6
indefensible(adjective, senseless, unwarranted, wanton, gratuitous)
5
bottomless(adjective, reason, false, true, senseless)
5
uncalled-for(adjective, reason, false, useless, senseless)
3
causeless(adjective, reason, useless, senseless, unwarranted)
3
unprovoked(adjective, reason, senseless, unwarranted, reckless)
3
unsupportable(adjective, senseless, unwarranted, wanton, gratuitous)
2
needless(adjective, useless, unwarranted, unnecessary, wanton)
1
reasonless(adjective, foolish, crazy, unreasonable, senseless)
1
superfluous(adjective, useless, senseless, unwarranted, unnecessary)
0
assumed(adjective, senseless, unwarranted, wanton, gratuitous)
0
inessential(useless, unwarranted, unnecessary, wanton)
0
not necessary(expression, adjective, senseless, unwarranted, wanton)
0
supererogatory(adjective, senseless, unwarranted, wanton, gratuitous)
0
uncalled for(expression, adjective, senseless, unwarranted, wanton)
0
unessential(unwarranted, wanton, uncalled-for)
0
unmerited(unwarranted, wanton, uncalled-for, indefensible)
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APASmart Define. (2015). groundless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/groundless/thesaurus/synonyms
ChicagoSmart Define. 2015. "groundless thesaurus" https://smartdefine.org/groundless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, groundless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/groundless/thesaurus/synonyms>.
MLASmart Define. "groundless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/groundless/thesaurus/synonyms>