easy mark

black mark

Something that negatively affects someone's reputation.

breathe easy

To relax or feel secure about something.

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 money

Money that is easily acquired.

easy on the eye

Alternative form of easy on the eyes.

easy on the eyes

Physically attractive; beautiful.

easy pickings

Something easily acquired or stolen.