used of a situation in which one is busy with something else or is not looking
1
to throw sb under the bus
phrase
to gain advantage at the cost of someone else's suffering or loss
2
to stab sb in the back
phrase
to be disloyal and ungrateful to someone who has trusted or supported one
3
snake in the grass
phrase
a person who has a tendency to deceive or mislead others and is very likely to betray their trust
4
to sell sb down the river
phrase
to be unfaithful or disloyal to someone so as to gain profit oneself
5
to leave sb in the dust
phrase
to not care for someone and leave them all alone
6
Judas kiss
noun
an act that seems kind but with the intention of betraying someone
7
to feed / throw sb to the wolves
phrase
to make no effort to save or defend someone, particularly when they are being severely criticized or being treated unfairly
8
to drop a dime on sb
phrase
to secretely gather information about a person or group in order to expose them to a person of higher authority, often for one's personal gain
9
behind one's back
phrase
without one knowing or approving
10
to rob Peter to / and pay Paul
phrase
to take from one source or person in order to fulfill an obligation or debt to another source or person, often resulting in a cycle of borrowing or rearranging debts without actually resolving the underlying financial issue