weaselly

Adjective

weaselly (comparative more weaselly or weasellier, superlative most weaselly or weaselliest)

1. Resembling a weasel (in appearance).
   • The writer had just entered into his eighteenth year, when he met at the table of a certain Anglo-Germanist an individual, apparently somewhat under thirty, of middle stature, a thin and weaselly figure, a sallow complexion, a certain obliquity of vision, and a large pair of spectacles.1857, George Borrow, The Romany Rye, 2nd edition, London: John Murray, published 1858, Volume 2, Appendix, Chapter 11, p. 359
   • “Pretty?”
     […] Mr. Prestcott considered. “Fair to middling. Bit weaselly, if you know what I mean. Wouldn’t have been much without makeup. As it was, she managed to look quite attractive.”1942, Agatha Christie, chapter 6, in The Body in the Library, New York: Pocket Books, published 1965, page 54
2. Devious; cunning; misleading; sneaky.
   • With intellect weaselly, artist has easily earned all his bacon and greens by it,
     And now that it’s done and all ready for Fun, it’s my duty to say what he means by it.1864, W. S. Gilbert, “Sixty-Three and Sixty-Four” originally published in Fun, V (2 January 1864), p. 162, later published in Bab Ballads, Cambridge, Massachusetts: Belknap Press of Harvard...
   • “Ah was vara weaselly. Ah wasna going home without yon stoof for Captain Harker. Vara coonning ah was.”1927, John Masefield, The Midnight Folk, London: Heinemann, page 221