expression

all bets are off

the outcome is now unpredictable

In more detail

(idiom) used to say that you cannot be sure what will happen, or that previous agreements or plans no longer apply because the situation has changed completely

Examples

When the storm hit, all bets were off and we had to cancel the outdoor concert.

How to use all bets are off

This idiom signals that previous assumptions, promises, or agreements no longer hold due to changed circumstances. It typically appears in informal spoken or written contexts when someone wants to emphasize that predictability has vanished or that normal rules no longer apply. The tone is often emphatic and can range from lighthearted to serious, depending on what stakes or expectations are being overturned.

Common phrases

if X happens, all bets are off
all bets are off now
once that changes, all bets are off
at that point all bets are off

Synonyms

all deals are off · anything goes · the gloves are off · all bets are off the table

A common mistake

Learners sometimes use the singular 'all bet is off' instead of the plural 'all bets are off', or they may try to translate it literally in their own language, missing that it is an idiomatic expression with no one-to-one correspondence.

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