35 entries under faint topic. ×

23
invisible(adjective, hard, knowledge, subtle)
21
indistinct(adjective, dull, hard, weak, soft)
19
indiscernible(adjective, hard, knowledge, subtle)
17
impalpable(adjective, hard, knowledge, fine)
14
slight(adjective, calm, dull, hard, weak)
12
inaudible(adjective, dull, quiet, hard, weak)
12
vague(adjective, dull, hard, weak, soft)
11
inappreciable(adjective, hard, light, knowledge, slight)
10
subtle(adjective, hard, slight, fine, thin)
9
indistinguishable(adjective, hard, knowledge, subtle)
9
infinitesimal(adjective, hard, big, small)
9
insensible(adjective, hard, knowledge, indifferent)
9
minute(adjective, hard, soft, slight, gentle)
9
unnoticeable(adjective, hard, knowledge)
8
gradual(adjective, calm, quiet, hard, smooth)
8
inconsiderable(adjective, hard, soft, slight, gentle)
8
inconspicuous(adjective, hard, slight, fine, thin)
8
microscopic(adjective, hard, slight, big, limited)
7
evanescent(adjective, hard, subtle, insubstantial)
7
weak(adjective, dull, soft, gentle, low)
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APASmart Define. (2015). imperceptible thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/imperceptible/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperceptible thesaurus" https://smartdefine.org/imperceptible/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, imperceptible thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/imperceptible/thesaurus/synonyms>.
MLASmart Define. "imperceptible thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/imperceptible/thesaurus/synonyms>