- tre corde,
- treacle mustard,
Origin of treacherous
Examples from the Web for treacherously
Trying to build a one-state reality in the name of “inalienable rights and realpolitik” is treacherously dishonest.
She inquired the name of the man of rank who had acted so treacherously to the hapless girl.The Golden Dog|William Kirby
Change and absence, to which he had trusted to weaken her hold on him, had treacherously strengthened it instead.Armadale|Wilkie Collins
Pelopidas, treacherously made prisoner by Alexander of Pherae, is rescued by Epaminondas.
early 14c., from Old French trecheros (12c.), from trecheur, agent noun from trechier "to cheat, trick" (see trick). Figuratively, of things, from c.1600. Related: Treacherously; treacherousness.