breathe easy

breathe a sigh of relief

to be relieved; to feel relief.

breathe a word

To divulge even part of a secret (usually used with a negative).

breathe down someone's neck

To follow or supervise someone too closely, causing discomfort for that person.

breathe one's last

To die.

easy come, easy go

Easily won and easily lost (usually said when resigned to a loss; something that comes in the same way, goes in the same way)

easy does it

Relax; do something gently, lightly or carefully; slow down; calm down.

easy mark

Someone who is easily fooled or victimized.

easy money

Money that is easily acquired.