198 entries under adjective topic. ×

5
undefined(vague, general, unclear, ambiguous)
5
undisclosed(obscure, dark, hidden, concealed)
5
unimportant(humble, distant, minor, remote)
5
untold(obscure, strange, mysterious, indefinite)
4
dishonorable
4
incalculable(ineffable, inexpressible, indescribable)
4
extraneous(experience, distant, different, unfamiliar)
4
inconspicuous(humble, distant, minor, remote)
4
indeterminate(rough, anxious, unsettled, worried)
4
little known(expression, obscure, strange, new)
4
peculiar(strange, new, untried, inexplicable)
4
shadowy(obscure, rough, dark, vague)
4
unaccustomed(experience, unusual, strange, new)
4
unacquainted(ignorant, unfamiliar, uninformed, oblivious)
4
uncommon(obscure, unusual, strange, new)
4
unnoted(obscure, strange, mysterious, indefinite)
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unnoticed
4
unrenowned(obscure, strange, mysterious, unfamiliar)
4
unspecified(rough, strange, vague, mysterious)
3
innominate(undisclosed, nameless, anonymous)
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APASmart Define. (2015). unknown thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unknown/thesaurus/synonyms
ChicagoSmart Define. 2015. "unknown thesaurus" https://smartdefine.org/unknown/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unknown thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unknown/thesaurus/synonyms>.
MLASmart Define. "unknown thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/unknown/thesaurus/synonyms>