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1. To make markings on something, often in a way that defaces it. In this usage, a noun or pronoun can be used between "mark" and "up." It looks like a child got their hands on these legal documents and marked them up with crayon. We'll have to reprint them. Unfortunately my new white shoes got marked up when I wore them on that walk that turned into a hike.
2. To write on or make informative markings on a document. In this usage, a noun or pronoun can be used between "mark" and "up." I like to mark up my students' papers with a lot of comments in the margins so that they understand the grade I gave them. Please go through the document and mark it up with any suggestions you have.
3. To increase the price of something, especially in the process of setting the initial price, as a way to ensure that a profit is made from its sale. In this usage, a noun or pronoun can be used between "mark" and "up." Movie theaters mark up the price of popcorn and candy really high because those are their main money-makers. I expect the store to mark the price up after the holiday sale, so we might as well buy it now.
mark something up
1. to mess something up with marks. Don't mark up your book! Who marked this book up?
2. to grade a paper and make lots of informative marks and comments on it. The teacher really marked up my term paper. Why did you mark my test up so much? I hardly made any errors.
3. to raise the price of something. The grocery store seems to mark the price of food up every week. They don't mark up the price of turkey at Thanks giving.
1. Deface by drawing, cutting, or another means of covering something with marks. For example, John was punished for marking up his desk, or These shoes really mark up the floor.
2. Raise the price of something, as in This small shop marks up its merchandise much more than department stores do. [Second half of 1800s]
1. To cover something with marks, especially defacing it: The rubber balls the kids threw in the hallway marked up the walls. The broken vacuum cleaner marked the floors up.
2. To write comments or corrections directly on some document: The teacher had marked up everyone's papers before passing them back to us. The committee marked the report up with comments and questions.
3. To raise the price of something put on sale: You'd better buy the shoes now before they mark them up. The new owners marked up the entire inventory.