All 7 Uses

treacherous
in
The Blind Assassin
(Edited)

The damp wood of the porch steps was treacherous.
p. 135.6

treacherous = dangerous
Grit blows through the air, crumpled paper along the ground; the sidewalks are treacherous with ice, from packed snow nobody's shovelled.
p. 274.2 *
Places in this house that I could once negotiate with ease have become treacherous: the sash windows are poised like traps, ready to fall on my hands, the stepstool threatens to collapse, the top shelves of the cupboards are booby-trapped with precarious glassware.
p. 367.1
She called him a lying, treacherous slave-trader, and a degenerate Mammon-worshipping monster.
p. 429.7

treacherous = untrustworthy
He removed his rubber boots carefully and left them on the back porch — Myra has him well trained, he's not allowed to track what she calls his dirt onto what she calls her carpets — then tiptoed in his mammoth socks across my kitchen floor; which, thanks to the energetic scourings and polishings of Myra's woman, is now as slick and treacherous as a glacier.
p. 475.8

treacherous = dangerous
Immediately I felt treacherous.
p. 483.3 *

treacherous = guilty of betrayal
Lost in the woods, and no white stones to mark the way, and treacherous ground to cover.
p. 497.3

treacherous = dangerous

Definitions:

(1) (treacherous as in: the road is steep and treacherous)
dangerous -- often in a non-obvious way
(2) (treacherous as in: a scheming, treacherous assistant)
guilty of betrayal or deception or likely to betray or deceive
(3) (meaning too rare to warrant focus)