English Dictionary

all bets are off

phrase

(idiomatic) Indicates that a future event appears uncertain, especially one that before seemed more certain. Any prior agreements are no longer valid.

When it comes to unpredictable situations, all bets are off.

意味（1）

(idiomatic) Indicates that a future event appears uncertain, especially one that before seemed more certain. Any prior agreements are no longer valid.

意味（2）

(idiomatic, by extension) Anything can happen; any previous preconceptions about what might happen are dismissed.