46 entries under indefinite topic. ×

5
unknown(adjective, obscure, strange, mysterious)
4
unexplained(adjective, strange, new, remote, mysterious)
3
mysterious(adjective, strange, new, remote)
3
strange(adjective, new, remote, mysterious)
3
uncharted(adjective, strange, new, remote, mysterious)
3
undiscovered(adjective, strange, new, remote, mysterious)
3
unexplored(adjective, strange, new, remote, mysterious)
3
unfamiliar(adjective, strange, new, remote, mysterious)
3
unidentified(adjective, strange, new, remote, mysterious)
2
unapprehended(adjective, strange, new, remote, mysterious)
2
undetermined(strange, unidentified)
2
unheard-of(strange, new, remote, unidentified)
2
unperceived(strange, new, remote, mysterious)
2
unrevealed(strange, new, remote, mysterious)
1
X(strange, new, remote, mysterious)
1
alien(strange, new, remote, mysterious)
1
anonymous(adjective, strange, unidentified)
1
concealed(strange, new, remote, mysterious)
1
desolate(strange, new, remote, mysterious)
1
distant(strange, new, remote, mysterious)
<123>
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APASmart Define. (2015). unascertained thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unascertained/thesaurus/synonyms
ChicagoSmart Define. 2015. "unascertained thesaurus" https://smartdefine.org/unascertained/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unascertained thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unascertained/thesaurus/synonyms>.
MLASmart Define. "unascertained thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/unascertained/thesaurus/synonyms>