382 entries under adjective topic. ×

4
wakeless
3
bitter(strong, intense, powerful, penetrating)
3
brainy(sharp, smart, bright, intelligent)
3
buried(depth, bottomless)
3
cabbalistic
3
capable(smart, bright, intelligent, brainy)
3
clever(keen, sharp, smart, bright)
3
cryptic
3
deep-rooted(essential, basic, fundamental)
3
fervid(strong, intense, passionate, powerful)
3
gifted(smart, bright, intelligent, brainy)
3
harsh(strong, intense, heavy, powerful)
3
hermetic(obscure, complex, deep, thoughtful)
3
impassioned(strong, intense, passionate, powerful)
3
indecipherable
3
inscrutable
3
insightful(keen, sharp, smart, sensitive)
3
judicious(sharp, smart, sensible, intelligent)
3
lettered
3
mystifying(hard, delicate, complex, tricky)
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APASmart Define. (2016). profound thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/profound/thesaurus/synonyms
ChicagoSmart Define. 2016. "profound thesaurus" https://smartdefine.org/profound/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, profound thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/profound/thesaurus/synonyms>.
MLASmart Define. "profound thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/profound/thesaurus/synonyms>