Shaking; disturbing; discordant.

A shaking; a tremulous motion; as, the jarring of a steamship, caused by its engines.

Discord; a clashing of interests.

making or causing a harsh and irritating sound; "the jarring noise of the iron gate scraping on the sidewalk"

the process of removing young bettas from the community tank or grow out tank and putting them in separate jars so they might not fight with each other.