jarring

Etymology 1

From jar (“to clash, conflict, disturb”) + -ing.

adj

1. That jars (clashes or disagrees); incongruous, conflictful.
   Slackware does not include a graphical installer. Its package manager does not perform any dependency resolution. This can be jarring for new users, particularly within the last few years, but it also enables a deeper understanding of the system. 2018-07-16, Ben Cotton, “The oldest, active Linux distro, Slackware, turns 25”, in Opensource.com
   I could probably take your chick But I just wouldn't 'cause she's jarrin' 2019, Stormzy, Vossi Bop

Etymology 2

From jar + -ing.

noun

1. Storage in jars.
   The jarring of peaches took place at the end of the season.
2. A feeling or movement that jars or jolts.
   The striker's job was onerous, too, because there was so little "give" in the metal, and the perpetual jarring was indeed trying to the muscles. 1945 January and February, A Former Pupil, “Some Memories of Crewe Works—III”, in Railway Magazine, page 13

Etymology 3

From jar + -ing.

verb

1. present participle and gerund of jar