92 entries under soft topic. ×

21
indistinct(adjective, dull, hard, weak)
15
faint(adjective, calm, dull, quiet, weak)
14
slight(adjective, calm, dull, hard, weak)
12
inaudible(adjective, dull, quiet, hard, weak)
12
vague(adjective, dull, hard, weak)
9
gentle(adjective, calm, dull, weak)
9
minute(adjective, hard, slight, gentle)
9
unclear(adjective, dull, quiet, weak)
8
feeble(adjective, calm, dull, quiet, weak)
8
inconsiderable(adjective, hard, slight, gentle)
7
weak(adjective, dull, gentle, low)
6
dim(adjective, dull, weak, gentle)
6
easy(adjective, calm, quiet, smooth)
6
insignificant(adjective, hard, slight, gentle)
4
dull(adjective, weak, gentle, low)
4
low(adjective, calm, dull, quiet, weak)
4
minuscule(adjective, gentle, minute, tiny)
4
pale(adjective, dull, weak, gentle)
4
unhearable(adjective, quiet, low)
3
moderate(adjective, calm, dull, quiet, weak)
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APASmart Define. (2015). imperceptible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/imperceptible/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperceptible thesaurus" https://smartdefine.org/imperceptible/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, imperceptible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/imperceptible/thesaurus/synonyms>.
MLASmart Define. "imperceptible thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/imperceptible/thesaurus/synonyms>