| a1 | |
| abnormal(adjective, unusual) | |
| abnormalities | |
| abnormities | |
| aboriginal | |
| above average(adjective, abnormal, aberrant, anomalous, aberrated) | |
| absent | |
| absorbing | |
| abstract | |
| absurd | |
| acceptable | |
| according to rule | |
| actual | |
| acute | |
| ad hoc | |
| advance | |
| advanced | |
| adverse | |
| affected | |
| aft |
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| APA | Smart Define. (2016). rare thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/rare/thesaurus/related |
| Chicago | Smart Define. 2016. "rare thesaurus" https://smartdefine.org/rare/thesaurus/related (accessed September 29, 2026). |
| Harvard | Smart Define 2016, rare thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/rare/thesaurus/related>. |
| MLA | Smart Define. "rare thesaurus" 14 March 2016. Web. 29 September 2026. <https://smartdefine.org/rare/thesaurus/related> |