A cool customer

Posted by Tim Luo on 2007/9/23 0:01:30

This is used about someone who is always calm and confident, but is often not very friendly.


He's a cool customers, he behaves like he's being interviewed for a job, not reprimanded for a mistake.

The killer was able to think about wiping off fingerprints; that suggests a cool customer who doesn't often lose control.


Source: Longman Idioms Dictionary