15 entries under imperceptible topic. ×

23
ephemeral(adjective, time, continue, limited, brief)
21
evanescent(adjective, time, continue, limited, brief)
3
trivial(adjective, slight, important, small, unimportant)
2
minute(adjective, slight, small, unimportant, subtle)
1
imponderable(adjective, impulsive, unpredictable, subtle)
1
inappreciable(adjective, slight, small, unimportant, commonplace)
1
inconsiderable(slight, small, unimportant, subtle)
1
insignificant(slight, small, unimportant, subtle)
1
microscopic(slight, small, unimportant, commonplace, subtle)
1
slight(small, unimportant, subtle, unremarkable)
1
small(slight, unimportant, subtle, unremarkable)
1
subtle(impulsive, unpredictable, unremarkable, explosive)
0
tenuous(unremarkable, transient, invisible, short-lived)
0
unnoticeable
0
unobservable
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APASmart Define. (2016). momentary thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/momentary/thesaurus/synonyms
ChicagoSmart Define. 2016. "momentary thesaurus" https://smartdefine.org/momentary/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, momentary thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/momentary/thesaurus/synonyms>.
MLASmart Define. "momentary thesaurus" 26 February 2016. Web. 1 October 2026. <https://smartdefine.org/momentary/thesaurus/synonyms>