134 entries under obscure topic. ×

32
recondite(adjective, sound, easy, evil, sharp)
24
deep(adjective, hard, sound, easy, evil)
24
mysterious(adjective, hard, evil, dark)
22
puzzling(adjective, hard, fancy, evil)
19
difficult(adjective, hard, strange, uncertain)
19
intricate(adjective, hard, fancy, evil)
18
arcane(adjective, evil, difficult, strange)
18
profound(adjective, easy, difficult, heavy)
18
esoteric(adjective, hard, sound, easy, evil)
18
incomprehensible(adjective, difficult, strange, uncertain)
16
occult(noun, adjective, evil, dark)
16
perplexing(adjective, hard, fancy, difficult)
14
cryptic(adjective, evil, sharp, difficult)
14
unfathomable(adjective, hard, difficult, strange)
13
complicated(adjective, hard, evil, difficult)
12
enigmatic(adjective, hard, evil, sharp)
11
hidden(adjective, hard, evil, difficult)
10
involved(adjective, hard, fancy, difficult)
10
secret(adjective, evil, dark, strange)
9
dark(adjective, feature, mysterious, hidden)
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APASmart Define. (2015). abstruse thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms
ChicagoSmart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, abstruse thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>.
MLASmart Define. "abstruse thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms>