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Added 10 October 2026

jounce

/d͡ʒaʊn(t)s/ verb

verb Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about jounce at Wordnik → Where our words come from →

To shake (someone or something) up and down, for example, by driving a vehicle over obstructions or riding a horse roughly; to jolt.
To move vigorously up and down; to bounce, to bump, to jolt; also, to fall and hit something heavily.

noun

A vigorous up-and-down movement; a jolt, a shake.
The fourth derivative of the position vector with respect to time; the time derivative of jerk.

Origin

The verb is derived from Late Middle English *jouncen (“to jolt violently”) (evidenced by jouncinge (“violent jolting movement”)); further etymology unknown, possibly imitative. The noun is probably derived from the verb as it is attested later.

From Wiktionary, via Kaikki.org (CC BY-SA)

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