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

20 entries under unsupported topic. ×

23
baseless(adjective, reason, poor, foolish, true)
20
unfounded(adjective, reason, foolish, true, crazy)
12
idle(adjective, reason, false, true, worthless)
6
empty(adjective, reason, negative, worthless, unwarranted)
5
bottomless(adjective, reason, false, true, senseless)
5
uncalled-for(adjective, reason, false, useless, senseless)
4
vain(adjective, false, empty, worthless, untrue)
3
causeless(adjective, reason, useless, senseless, unwarranted)
3
tenuous(adjective, poor, negative, implausible, vacant)
3
unprovoked(adjective, reason, senseless, unwarranted, reckless)
2
foundationless(adjective, reason, false, unwarranted, untrue)
1
fruitless(adjective, empty, worthless, frivolous, ineffective)
1
nugatory(adjective, empty, worthless, frivolous, ineffective)
1
reasonless(adjective, foolish, crazy, unreasonable, senseless)
1
unsuccessful(adjective, empty, worthless, frivolous, ineffective)
1
useless(adjective, empty, senseless, worthless, unwarranted)
1
worthless(adjective, empty, senseless, unwarranted, wanton)
0
ineffective(adjective, empty, worthless, frivolous, futile)
0
justification(adjective, unwarranted, baseless)
0
uncalled for(expression, adjective, senseless, unwarranted, wanton)
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APASmart Define. (2015). groundless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/groundless/thesaurus/synonyms
ChicagoSmart Define. 2015. "groundless thesaurus" https://smartdefine.org/groundless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, groundless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/groundless/thesaurus/synonyms>.
MLASmart Define. "groundless thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/groundless/thesaurus/synonyms>