Slaister - noun, a messy person or the verb, to make mess or work in a sloppy fashion.

The Oxford English Dictionary gives the origin of slaister as ‘obscure’ and the Dictionary of the Scots Language  says that its immediate origin is uncertain but it ultimately may have its roots in Scandinavia.Our earliest example of a person being a slaister with food or drink is from Roxburgh (1825) in John Jamieson’s Etymological Dictionary of The Scottish Language first published in 1808. In the Scotsman of 26 July 1954 we have: “He maladroitly spilled his tea on the glistening tablecloth, and was promptly but not unkindly called a wee slaister." So let's here it for slaisters that manage to draigle authing down thir dukes.