Double cross and Fast one

Double cross noun - The act or fact of violating the trust or confidence of another.

Fast one and double cross are semantically related in cheating topic. In some cases you can use "Fast one" instead a noun phrase "Double cross", when it comes to topics like swindle.

Fast one noun - A cunning or deceitful action or device.

Double cross and fast one are semantically related in cheating topic. Sometimes you can use "Double cross" instead a noun phrase "Fast one".