Synonyms|277Antonyms|133|Broader|2Narrower|0Related|570

22 entries under groundless topic. ×

15
unfounded(adjective, false, foolish, true, crazy)
15
unwarranted(adjective, right, reasonable, true, untrue)
11
unjustified(adjective, unwarranted, untrue, illogical, deceptive)
9
ungrounded(adjective, poor, negative, untrue, vacant)
9
bottomless(adjective, false, true, senseless, unwarranted)
9
unsupported(adjective, false, unwarranted, untrue, substantiation)
7
flimsy(adjective, poor, negative, untrue, implausible)
7
uncalled-for(adjective, false, senseless, unwarranted, untrue)
6
false(adjective, poor, worthless, unwarranted, unacceptable)
5
indefensible(adjective, senseless, unwarranted, wanton, gratuitous)
3
reasonless(adjective, false, foolish, crazy, unreasonable)
3
speculative(adjective, unsubstantiated, unsupported, unfounded)
3
unsupportable(adjective, senseless, unwarranted, wanton, superfluous)
1
assumed(adjective, senseless, unwarranted, wanton, superfluous)
1
causeless(adjective, false, senseless, unwarranted, justification)
1
superfluous(adjective, senseless, unwarranted, wanton, gratuitous)
1
tenuous(adjective, poor, negative, implausible, vacant)
1
unprovoked(adjective, false, senseless, unwarranted, justification)
1
untrue(adjective, worthless, unacceptable, illogical, deceptive)
0
not necessary(expression, adjective, senseless, unwarranted, wanton)
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ChicagoSmart Define. 2015. "baseless thesaurus" https://smartdefine.org/baseless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, baseless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/baseless/thesaurus/synonyms>.
MLASmart Define. "baseless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/baseless/thesaurus/synonyms>