1. To intentionally reveal damaging or unflattering information about another's character or transpired event, while at the same time trying to make themselves look good or innocent in the eyes of the listener. To shift blame or attention in a cowardly way.
The varsity quarteback was thrown under the bus by a sophomore when the coach was told who toilet papered his house.
Phrase made popular by a small town graphic designer in northern Michigan after watching two battling chipmonks attempt to hurl one another under a fast moving shortbus. Denotes an individual's willingness to sacrifice another's future and recognition for one's own gain. Blatant disregard for another's well-being. Betrayal.
Anakin through her co-worker under the bus.
Net was thrown under the bus.
To be thrown under the bus; A popular term at Boeing and possibly other corporate entities.
When someone either intentionally or unintentionally says something that makes you look bad or points out a mistake you made in front of your peers. This is similar to being backstabbed, but usually the circumstances are much more minor. This is sometimes used jokingly to tell someone that what they said may have crossed the line, or they were stepping on your toes.
"Way to throw me under the bus in there Abraham! I hadn't told any of them they were being transferred, you let the cat out of the bag before I had a chance to tell them!"
"I was thrown under the bus every day Jebadiah, those A-holes have no respect!"