53
profound(adjective, good, feeling, strong, hard)
24
intense(adjective, clear, strong, light, tough)
22
abyss(noun, crack, split, high, hole)
19
recondite(adjective, sound, easy, evil, obscure)
17
strong(adjective, strong, difficult, intense, big)
17
obscure(adjective, hard, weak, meaning, pale)
16
abstruse(adjective, hard, sound, easy, evil)
16
unfathomable(adjective, hard, complete, obscure, difficult)
15
low(adjective, dull, close, weak, position)
15
acute(adjective, strong, keen, sharp, smart)
15
earnest(adjective, person, strong, warm, intense)
14
clever(adjective, sharp, smart, bright, intelligent)
14
esoteric(adjective, hard, sound, easy, evil)
14
shrewd(adjective, smooth, sharp, bright, cunning)
13
ocean(noun, water, sea, police, ocean)
13
rich(adjective, clear, strong, light, sound)
13
secret(adjective, evil, obscure, humble, thoughtful)
13
powerful(adjective, clear, strong, moving, intense)
12
mysterious(adjective, hard, evil, obscure, heavy)
12
great(adjective, strong, sharp, harsh, intense)
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APASmart Define. (2016). deep thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/deep/thesaurus/synonyms
ChicagoSmart Define. 2016. "deep thesaurus" https://smartdefine.org/deep/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, deep thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/deep/thesaurus/synonyms>.
MLASmart Define. "deep thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/deep/thesaurus/synonyms>