Idioms Beginning With 'Z'

~ Z ~
Zero hour

The time when something important is to begin is zero hour.

Zero tolerance

If the police have a zero tolerance policy, they will not overlook any crime, no matter how small or trivial.

Zip it

This is used to tell someone to be quiet.

Zip your lip

If someone tells you to zip your lip, they want to to shut up or keep quiet about something. ('Zip it' is also used.)