More sub-zero temperatures overnight will make conditions even more treacherous.
From the independent.co.uk
Here, the frenetic pace and treacherous schedules can have a devastating effect.
From the omaha.com
Rivulets of ice formed in the muck of the road and made the walking treacherous.
From the nytimes.com
You've crossed the treacherous border states and, so far, eluded slave catchers.
From the boston.com
Calling Byron treacherous, William Lamb was supportive of his wife to her death.
From the en.wikipedia.org
As anyone who has been to Hawaii knows, the Pacific can be treacherous off Oahu.
From the signonsandiego.com
The City By the Bay is also a treacherous place to drive when there are no cars.
From the chron.com
The storm also put a treacherous glaze on highways ahead of the holiday weekend.
From the thestate.com
That means treacherous travel conditions could persist until Wednesday or beyond.
From the bostonherald.com
More examples
Dangerously unstable and unpredictable; "treacherous winding roads"; "an unreliable trestle"
Punic: tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans; "Punic faith"; "the perfidious Judas"; "the fiercest and most treacherous of foes"; "treacherous intrigues"
(treacherously) faithlessly: in a disloyal and faithless manner; "he behaved treacherously"; "his wife played him false"
(treachery) perfidy: betrayal of a trust
(treachery) an act of deliberate betrayal
Betrayal (or backstabbing) is the breaking or violation of a presumptive social contract, trust, or confidence that produces moral and psychological conflict within a relationship amongst individuals, between organizations or between individuals and organizations. ...
Treachery is a statutory offence in Australia. There was also an unrelated statutory offence bearing that name in the United Kingdom, but it has been abolished. Both of these offences were derived from or inspired by the related offence of treason. ...
Exhibiting treachery; Deceitful; inclined to betray; Unreliable; dangerous
(treachery) Deliberate, often calculated, disregard for trust or faith; The act of violating the confidence of another, usually for personal gain; Treason