At the drop of a hat.
/æt ðə drɒp əv ə hæt/
At the drop of a hat.
/æt ðə drɒp əv ə hæt/
The idiom "At the drop of a hat" signifies doing something immediately, without any hesitation or delay. It comes from the 19th-century practice where dropping a hat could signal the start of a race or a fight, thus denoting suddenness. In the modern context, this phrase is beneficial for discussing decisions made quickly, spontaneous actions, or readiness to act whenever needed, which is a desirable trait in fast-paced environments.
She'll leave at the drop of a hat.
She is willing to leave immediately without hesitation.
He changes his mind at the drop of a hat.
He is very indecisive, frequently and easily changing his opinions.
They're ready to help out at the drop of a hat, no matter the situation.
They are always prepared to provide support instantly under any circumstances.