48 entries under unknowing topic. ×

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in a corner(expression, idiom, hermetical, unbriefed)
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in chambers(expression, adjective, taciturn, uncommunicative)
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in privacy(expression, adjective, taciturn, uncommunicative)
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in private(expression, adjective, taciturn, uncommunicative)
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in secret(expression, hermetical, unbriefed)
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in the dark(expression, adjective, idiom, obscure, dark)
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nescient(hermetical, unbriefed)
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not informed(expression, hermetical, unbriefed)
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not knowing(expression, hermetical, unbriefed)
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not told(expression, hermetical, unbriefed)
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out of it(expression, idiom, hermetical, unbriefed)
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out of public view(expression, idiom, hermetical, unbriefed)
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out to lunch(expression, idiom, hermetical, unbriefed)
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unadvised(hermetical, unbriefed)
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unbriefed
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unconversant(hermetical, unbriefed)
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under the table(expression, idiom, recreant, sub-rosa)
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unforthcoming(adjective, taciturn, uncommunicative, hermetical)
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uninformed(hermetical, unbriefed)
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uninstructed(hermetical, unbriefed)
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APASmart Define. (2015). under cover thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/under_cover/thesaurus/synonyms
ChicagoSmart Define. 2015. "under cover thesaurus" https://smartdefine.org/under_cover/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, under cover thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/under_cover/thesaurus/synonyms>.
MLASmart Define. "under cover thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/under_cover/thesaurus/synonyms>