52 entries under mysterious topic. ×

2
apart(obscure, unknown, unrelated, alien)
2
extraordinary(adjective, obscure, unusual, strange, new)
2
unexplored(adjective, experience, strange, new, remote)
1
X(strange, new, remote, indefinite)
1
concealed(strange, new, remote, indefinite)
1
desolate(strange, new, remote, indefinite)
1
hidden(strange, new, remote, indefinite)
1
incog(strange, new, remote, indefinite)
1
indefinite(adjective, strange, unfamiliar, unidentified)
1
little known(expression, strange, new, remote)
1
nameless(strange, new, remote, indefinite)
1
secret(strange, new, remote, indefinite)
1
so-and-so(strange, new, remote, indefinite)
1
such-and-such(strange, new, remote, indefinite)
1
unapprehended(strange, new, remote, indefinite)
1
unascertained(strange, new, remote, indefinite)
1
uncelebrated(strange, new, remote, indefinite)
1
uncharted(adjective, strange, new, remote)
1
undiscovered(strange, new, remote, private)
1
undistinguished(adjective, obscure, strange, new, remote)
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APASmart Define. (2016). foreign thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/foreign/thesaurus/synonyms
ChicagoSmart Define. 2016. "foreign thesaurus" https://smartdefine.org/foreign/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, foreign thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/foreign/thesaurus/synonyms>.
MLASmart Define. "foreign thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/foreign/thesaurus/synonyms>