Synonyms|860Antonyms|162|Broader|10Narrower|5Related|1.4k

130 entries under slight topic. ×

1
spare(adjective, mean, weak, fine)
1
sparse(adjective, mean, weak, flat)
1
spongy(adjective, light, easy, thin)
1
sprightly(adjective, light, easy, thin)
1
tacky(weak, thin, feeble, flimsy)
1
tissuelike(adjective, light, easy, thin)
1
too little too late(expression, adjective, idiom, light, weak)
1
transparent(adjective, light, weak, thin)
1
unheavy(adjective, light, easy, thin)
1
unproductive(weak, poor, small, inadequate)
1
vain(adjective, value, insignificant, unimportant)
1
wishy-washy(light, weak, soft, trivial)
1
wobbly(adjective, weak, thin, delicate)
0
cut-rate(weak, thin, feeble, tacky)
0
infertile(small, miserable, inadequate, limited)
0
lean(adjective, mean, fine, thin)
0
limited
0
measly(inadequate, limited, trivial, insufficient)
0
mere(small, miserable, inadequate, limited)
0
minimum(small, miserable, inadequate, limited)
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ChicagoSmart Define. 2016. "insubstantial thesaurus" https://smartdefine.org/insubstantial/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, insubstantial thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/insubstantial/thesaurus/synonyms>.
MLASmart Define. "insubstantial thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/insubstantial/thesaurus/synonyms>