INSIST', verb intransitive [Latin insisto; in and sisto, to stand.] 1. Literally, to stand or rest on. [Rarely used.] 2. In geometry, an angle is said to insist upon the arc of the circle intercepted between the two lines which contain the angle. 3. To dwell on in discourse; as, to insist on a particular topic. To insist on, to press or urge for any thing with immovable firmness; to persist in demands; as, to insist on oppressive terms in a treaty; to insist on immediate payment of a debt.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI