Green’s Dictionary of Slang

scutter n.1

[Scot. scutter, a slovenly, untidy worker]

an unpleasant person, a general term of abuse.

[Ire]Joyce Ulysses 5: Scutter, he cried thickly.
[US]Current Sl. V:3 11: Scutter, n. One who gossips.
[Ire] (ref. to 1963) D. Healy Bend for Home 177: The cat had a bird in his mouth, the scutter.

In derivatives