scroyle
noun. an untrustworthy person
noun. a wretch, a villain, someone who cannot be trusted or endured.
This is a very obscure word, considered obsolete by most dictionaries, but I’ve included it because it’s just fun. The age of the word gives it a sort of character; I might not call a modern person a scroyle, but I’d consider it for Ebeneezer Scrooge or Fagin.
Philip Starr had, at first sight of him, dubbed him "The Scroyle," and this sobriquet stuck.
—The Heart Line: A Drama of San Francisco by Gelett Burgess (pub. 1907)"Hang him, foul scroyle, let him pass," said the mercer; "if he be such a one, there were small worship to be won upon him."
—Kenilworth by Sir Walter Scott (pub. 1831)
Etymology, working backward:
Old French escrouselle (a kind of vermin)
Latin scrofulae (female pig, sow)
Comparison to English meaning of scrofula (a type of tyberculosis) not unwarranted.
Usage, according to the Google’s NGrams Viewer (may not be perfectly accurate):
For context, note that ‘the’ usually floats at ~4%.