45 entries under indefinite topic. ×
| secret(adjective, strange, unknown, undisclosed) | |
| so-and-so(adjective, strange, new, remote, mysterious) | |
| strange(adjective, new, remote, mysterious) | |
| such-and-such(adjective, strange, new, remote, mysterious) | |
| unapprehended(adjective, strange, new, remote, mysterious) | |
| unascertained(adjective, strange, new, remote, mysterious) | |
| uncelebrated(adjective, strange, new, remote, unknown) | |
| uncharted(adjective, strange, new, remote, mysterious) | |
| undiscovered(adjective, strange, new, remote, mysterious) | |
| undistinguished(adjective, strange, new, remote, unknown) | |
| unexplained(adjective, strange, new, remote, mysterious) | |
| unexplored(adjective, strange, new, remote, mysterious) | |
| unfamiliar(adjective, strange, new, remote, mysterious) | |
| unheard-of(adjective, strange, new, remote, unknown) | |
| unidentified(adjective, new, remote, unknown) | |
| unnoted(adjective, strange, new, remote, unknown) | |
| unperceived(adjective, strange, new, remote, mysterious) | |
| unrecognized(adjective, strange, new, remote, mysterious) | |
| unrenowned(adjective, strange, new, remote, mysterious) | |
| unrevealed(adjective, strange, new, remote, mysterious) |
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| APA | Smart Define. (2015). x thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/x/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "x thesaurus" https://smartdefine.org/x/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, x thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/x/thesaurus/synonyms>. |
| MLA | Smart Define. "x thesaurus" 27 October 2015. Web. 23 September 2026. <https://smartdefine.org/x/thesaurus/synonyms> |