| illegitimacy | |
| immoderate(wrong, improper, unacceptable) | |
| improper(wrong, unacceptable) | |
| in private(expression, secret, private, confidential) | |
| inappropriate(wrong, improper, unacceptable) | |
| independent(special, intimate, personal, confidential, hush-hush) | |
| individual(special, intimate, personal, confidential, hush-hush) | |
| injudicial | |
| inordinate(wrong, improper, unacceptable) | |
| intrusiveness | |
| isolated(personal, confidential, hush-hush) | |
| nonconforming(wrong, improper, unacceptable) | |
| nonpublic(special, intimate, personal, confidential, hush-hush) | |
| not open(expression, special, intimate, personal, confidential) | |
| not public(expression, secret, private, confidential) | |
| not sanctioned | |
| not to be quoted(expression, idiom, adverb, sensitive, confidential) | |
| odd(wrong, improper, unacceptable) | |
| off-key(wrong, improper, unacceptable) | |
| off-the-record(adjective, informal, unauthorized) |
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Unofficial on
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| APA | Smart Define. (2016). unofficial thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unofficial/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unofficial thesaurus" https://smartdefine.org/unofficial/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, unofficial thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unofficial/thesaurus/synonyms>. |
| MLA | Smart Define. "unofficial thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/unofficial/thesaurus/synonyms> |