47 entries under unpredictable topic. ×

5
elusive(adjective, vague, impulsive, mysterious)
5
subtle(adjective, vague, mysterious, ambiguous)
3
buoyant(adjective, impulsive, levity, explosive)
2
ephemeral(adjective, light, weak, slight)
2
light(adjective, weak, slight, impulsive)
1
erratic(adjective, impulsive, explosive)
1
fleeting(adjective, vague, impulsive, mysterious)
1
fugacious(vague, impulsive, mysterious, subtle)
1
fugitive(vague, impulsive, mysterious, subtle)
1
gaseous(impulsive, indistinguishable, imperceptible, unseen)
1
momentary(adjective, impulsive, subtle, imperceptible)
1
transient(vague, impulsive, mysterious, subtle)
1
transitory(vague, impulsive, mysterious, subtle)
1
unstable(adjective, impulsive, explosive)
1
vaporous(adjective, negative, impulsive, imperceptible)
0
capricious(impulsive, explosive)
0
changeable(impulsive, explosive)
0
effervescent(impulsive, explosive)
0
elastic(impulsive, explosive)
0
expansive(impulsive, explosive)
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APASmart Define. (2015). imponderable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/imponderable/thesaurus/synonyms
ChicagoSmart Define. 2015. "imponderable thesaurus" https://smartdefine.org/imponderable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, imponderable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/imponderable/thesaurus/synonyms>.
MLASmart Define. "imponderable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/imponderable/thesaurus/synonyms>