35 entries under indefinite topic. ×

14
uncharted(adjective, strange, new, remote, mysterious)
12
undiscovered(adjective, strange, new, remote, mysterious)
6
mysterious(adjective, strange, new, remote, unknown)
5
unexplained(adjective, strange, new, remote, mysterious)
5
unidentified(adjective, strange, new, remote, mysterious)
4
unascertained(adjective, strange, new, remote, mysterious)
3
obscure(adjective, strange, new, unknown)
3
unapprehended(adjective, strange, new, remote, mysterious)
3
unrevealed(strange, new, remote, mysterious)
2
anonymous(adjective, strange, unidentified)
2
concealed(strange, new, remote, mysterious)
2
new(adjective, strange, remote, mysterious, unknown)
2
unheard-of(strange, new, remote, unidentified)
2
unheard of(verb, expression, phrasal verb, strange)
2
unperceived(strange, new, remote, mysterious)
1
X(strange, new, remote, mysterious)
1
desolate(strange, new, remote, mysterious)
1
hidden(strange, new, remote, mysterious)
1
incog(strange, new, remote, mysterious)
1
incognito(strange, new, remote, unidentified)
<12>
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APASmart Define. (2015). unexplored thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unexplored/thesaurus/synonyms
ChicagoSmart Define. 2015. "unexplored thesaurus" https://smartdefine.org/unexplored/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unexplored thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unexplored/thesaurus/synonyms>.
MLASmart Define. "unexplored thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/unexplored/thesaurus/synonyms>