mark

* Mark up
Meaning - to raise the price on something
Example: The store marked up the price of the jacket I wanted.

* Mark down
Meaning - to lower the price of something
Example: There was a significant mark down on the sofa, so I bought it.

* Mark out
Meaning - to make boundaries around a certain area
Example: The construction workers marked out the area that they were demolishing.

* Mark off
Meaning - to cross off something that has been completed
Example: Each time I found an item in the store, I marked it off my list.