81 entries under adjective topic. ×

4
supernatural(heavenly, indistinguishable, imperceptible, immaterial)
4
unearthly(heavenly, immaterial, incorporeal, nonmaterial)
4
unworldly(heavenly, immaterial, incorporeal, nonmaterial)
4
weightless
3
buoyant(impulsive, unpredictable, levity, explosive)
3
inestimable
3
infinitesimal
3
nonphysical(heavenly, immaterial, incorporeal, nonmaterial)
3
unnoticeable(knowledge, imperceptible)
3
volatile(vague, changeable, subtle, ambiguous)
2
ephemeral(light, weak, slight, unpredictable)
2
imaginary(light, weak, slight, negative)
2
incalculable
2
incomprehensible
2
inconceivable
2
indistinguishable(knowledge, imperceptible)
2
light(weak, slight, impulsive, unpredictable)
2
microscopic
2
slight(light, weak, subtle, flimsy)
2
unmeasurable
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APASmart Define. (2015). imponderable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/imponderable/thesaurus/synonyms
ChicagoSmart Define. 2015. "imponderable thesaurus" https://smartdefine.org/imponderable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, imponderable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/imponderable/thesaurus/synonyms>.
MLASmart Define. "imponderable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/imponderable/thesaurus/synonyms>