Dictionary.com
Thesaurus.com
Synonyms

at the drop of a hat

Idioms  
  1. Immediately, without delay, as in We were ready to pack our bags and go on vacation at the drop of a hat. This phrase probably alludes to signaling the start of a race or other contest by dropping a hat. [Late 1800s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They said in a statement that he was a "friendly, outgoing person" who would "help anyone at the drop of a hat".

From BBC

Some have static patterns that make them hard to spot, whereas others—such as chameleons—can change their colors and patterns at the drop of a hat.

From Science Magazine

I don’t take for granted the privilege that I have to be able to call my parents, family or friends at the drop of a hat, thanks to FaceTime, WhatsApp and high-speed internet.

From Los Angeles Times

The best part is that you can make the marinated green beans a few days in advance, so they're ready to eat at the drop of a hat.

From Salon

Maybe the biggest problem with Bongino's premiere was that his new show lacked what he's become known for, which is losing his cool at the drop of a hat.

From Salon