38 entries under noun topic. ×
| forgetfulness | |
| inadvertence | |
| inattention | |
| inattentiveness | |
| infraction | |
| insult | |
| lapse | |
| mistake | |
| negligence | |
| offence | |
| omission | |
| oversight | |
| recklessness | |
| shortcoming | |
| supervision | |
| vacancy | |
| violation | |
| weakness |
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| APA | Smart Define. (2016). observe thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/observe/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "observe thesaurus" https://smartdefine.org/observe/thesaurus/antonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, observe thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/observe/thesaurus/antonyms>. |
| MLA | Smart Define. "observe thesaurus" 11 February 2016. Web. 30 September 2026. <https://smartdefine.org/observe/thesaurus/antonyms> |