The story
- Scots · borrowed fromjaup“(noun) dash or splash of mud, water, etc.; broken piece, fragment; light blow, slap; (verb) of water: to dash; to splash; to cause a splash by striking the surface of or throwing water; to bespatter or splash (mud, water, etc.); (obsolete) to knock about, manhandle”
- English todayjarp
Borrowed from Scots jaup (“(noun) dash or splash of mud, water, etc.; broken piece, fragment; light blow, slap; (verb) of water: to dash; to splash; to cause a splash by striking the surface of or throwing water; to bespatter or splash (mud, water, etc.); (obsolete) to knock about, manhandle”), perhaps from jalp, jilp (“to spill, splash, squirt”), probably originally imitative of a splash.
Etymology from Wiktionary, CC BY-SA 4.0.