false move
idiomPart offalse
false move — idiom
1. An action or decision that is a mistake and could cause problems or danger.
1.idiom
Definition
An action or decision that is a mistake and could cause problems or danger.
Example
In chess, one false move can lose the entire game, so Hyun always thinks carefully before moving a piece.
The negotiations were going well, but one false move from either side could destroy the agreement completely.