Dead In The Water

Meaning: If something is dead in the water, it has zero chances of making any progress or of succeeding.

For example:

• I bet his strategy to win this game as the false Sheriff is dead in the water. Nobody’s going to trust him.
• If you unconsciously reveal yourself as a mafia during the “day” – the probability you stay in the game is dead in the water.

You can practice this idiom soon at one of the English Mafia Club’s upcoming meetings: https://englishmafiaclub.com/events/upcoming-events