52 entries under mysterious topic. ×

58
obscure(adjective, feature, secret, hidden)
49
shadowy(adjective, characteristic, shade, color, dull)
32
opaque(adjective, feature, obscure, dull, gloomy)
30
concealed(adjective, feature, secret, hidden, obscure)
26
hidden(adjective, feature, obscure, characteristic)
25
cryptic(adjective, obscure, secret, feature, hidden)
25
arcane(adjective, feature, characteristic, obscure, description)
25
recondite(adjective, obscure, feature, hidden)
25
secret(adjective, feature, obscure, hidden)
23
enigmatic(adjective, feature, obscure, characteristic)
22
dour(adjective, feature, character, sadness, description)
22
threatening(adjective, feature, character, gloomy, description)
21
sullen(adjective, dull, gloomy, black, character)
20
glum(adjective, character, behaviour, personality, sadness)
19
occult(adjective, obscure, secret, hidden)
18
evil(adjective, feature, description, characteristics, characteristic)
18
glowering(adjective, character, behaviour, personality, upset)
18
atrocious(adjective, description, feature, characteristic, attribute)
17
clouded(adjective, dull, obscure, gloomy, lack)
17
bad(adjective, feature, description, evil, characteristic)
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APASmart Define. (2016). dark thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/dark/thesaurus/synonyms
ChicagoSmart Define. 2016. "dark thesaurus" https://smartdefine.org/dark/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, dark thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/dark/thesaurus/synonyms>.
MLASmart Define. "dark thesaurus" 3 April 2016. Web. 26 September 2026. <https://smartdefine.org/dark/thesaurus/synonyms>