Top Definition
likely to betray trust; unreliable; marked by hidden dangers, hazards, or perils
A word overused by nearly every television and radio news-anchor to describe conditions of every flat surface during cold-weather situations.
"Authorities called the road conditions 'treacherous' Wednesday evening and are asking residents to stay home and not drive if they can avoid it."
by PhantomV48 January 19, 2010
1 more definition
meaning something is amazing or great
yo did you hear that new Talib Kweli cd? that joint was treacherous
by gspizot February 20, 2003

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