from The Century Dictionary and Cyclopedia
- n. One who ought to be hanged; a scoundrel. Also crack-rope, wag-halter, etc.
Sorry, no etymologies found.
There is a cluster of "tosspots" beginning with make -, some of which do or can refer to persons, but their backs are often broken by hyphens, and a first-class "tosspot" retains a hyphen only to clarify pronunciation (e.g. drop-piss, stretch-halter).