20 entries under unfounded topic. ×

4
groundless(adjective, senseless, unwarranted, wanton, gratuitous)
4
unwarranted(adjective, wanton, uncalled-for)
3
baseless(adjective, senseless, unwarranted, wanton, superfluous)
3
indefensible(adjective, weak, senseless, unwarranted, wanton)
2
unjustified(adjective, unwarranted, wanton, uncalled-for)
1
assumed(adjective, senseless, unwarranted, wanton, superfluous)
1
bottomless(adjective, senseless, unwarranted, wanton, superfluous)
1
causeless(adjective, senseless, unwarranted, wanton, superfluous)
1
needless(adjective, unwarranted, wanton, uncalled-for)
1
not necessary(expression, adjective, senseless, unwarranted, wanton)
1
reasonless(adjective, senseless, unwarranted, wanton, superfluous)
1
supererogatory(adjective, senseless, unwarranted, wanton, superfluous)
1
superfluous(adjective, senseless, unwarranted, wanton, gratuitous)
1
unprovoked(adjective, senseless, unwarranted, wanton, superfluous)
0
inessential(unwarranted, wanton, uncalled-for)
0
uncalled-for(adjective, senseless, unwarranted, wanton, superfluous)
0
uncalled for(expression, groundless)
0
unessential(unwarranted, wanton, uncalled-for)
0
unmerited(unwarranted, wanton, uncalled-for)
0
wanton(unwarranted, uncalled-for)
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APASmart Define. (2015). unsupportable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unsupportable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsupportable thesaurus" https://smartdefine.org/unsupportable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unsupportable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unsupportable/thesaurus/synonyms>.
MLASmart Define. "unsupportable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/unsupportable/thesaurus/synonyms>