382 entries under adjective topic. ×

15
penetrating(strong, slight, keen, sharp)
15
unfathomable(hard, complete, obscure, difficult)
13
great(strong, hard, intense, powerful)
12
abysmal(complete, deep, surface, extent)
12
acute(strong, great, keen, sharp)
12
heartfelt(feeling, great, warm, intense)
12
secret(obscure, deep, thoughtful, intimate)
11
keen(strong, great, sharp, smart)
11
knowledgeable(smart, bright, deep, intelligent)
11
obscure(hard, complex, deep, mysterious)
11
sage(smart, bright, sensible, deep)
10
shrewd(knowledge, sharp, smart, sensible)
10
sincere(great, warm, intense, passionate)
10
subtle(quiet, hard, slight, fine)
9
intellectual(bright, deep, intelligent, thoughtful)
9
consummate(great, intense, full, emotional)
9
deep-seated(great, intense, emotional, essential)
9
erudite(knowledge, deep, intelligent, thoughtful)
9
exhaustive(great, complete, intense, full)
9
mysterious(hard, obscure, delicate, complex)
10 years ago|24k views|share |citing 
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>