INADVERT'ENCE INADVERT'ENCY, noun [Latin in and advertens, adverto. See Advert.] 1. A not turning the mind to; inattention; negligence; heedlessness. Many mistakes and some misfortunes proceed from inadvertence 2. The effect of inattention; any oversight, mistake or fault which proceeds from negligence of thought. The productions of a great genius, with many lapses and inadvertencies, are infinitely preferable to works of an inferior kind of author.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI