mark off

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mark off

1. To put a mark of some kind by a name or thing on a list as an indication of something (e.g., completion of a task, attendance of something, etc.). A noun or pronoun can be used between "mark" and "off." Please mark off each item on the list if you see it in the warehouse. I'll mark you off when I am satisfied you've done the assignment as I requested.
2. To lower the score or grade of someone or something. A noun or pronoun can be used between "mark" and "off." The professor marked me off because I didn't show all of my work. While we really like the internal specs of the phone, we have to mark it off because of the cheap-feeling plastic they used in its body.
3. To establish the perimeter or boundary of some area with a visual marker. A noun or pronoun can be used between "mark" and "off." We'll need to mark off the plots of grass that have already been sprayed with weed-killer. The police marked the crime scene off with yellow tape.
4. To establish or indicate that one person, thing, or group is different or separate from others. A noun or pronoun can be used between "mark" and "off." The ability to navigate current technologies with such comfort and proficiency marks off these young people from their parents' generation. The premium build quality really marks this phone off from its competitors.
See also: mark, off
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

mark someone or something off

 and mark someone or something out
to cross off the name of someone or something. They were late, so I marked them off. I marked off the late people. Could you mark that title out? It has been discontinued.
See also: mark, off
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

mark off

v.
1. To indicate the boundary of some region: The rows of trees on either side of the property mark off our part of it. The lime marks the playing field off.
2. To make a mark or sign by the name of someone or something on some list, especially to indicate completion of a task or an intention to do a task: As I delivered each package, I marked off the name of the addressee to make sure I hadn't forgotten anyone. Well, that task is finished, so let's mark it off the list.
3. To lower someone's score or grade by some amount due to some error: My professor marked me off a grade for being late. The teacher marks off five points for each spelling error. The judges marked the dancers off for dancing over the time limit.
See also: mark, off
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
If any numbers published in paper appear on your bingo grid - mark them off! When you have all 15 numbers on your grid for the game in play, you can make a claim for that game and the weekly prize money.
A member said: "I asked one of the adult children to call out the numbers so I could mark them off.
Mark them off on the page and send it to Spot the Difference Competition, The AOP, OT, 2 Woodbridge Street, London, EC1R 0DG or email a scan of the page to competitions@ optometry.co.uk
If any of the numbers appear on your gamecards, mark them off.
If any of the published numbers appear on your match and win gamecard, simply mark them off on the day they are published.
"I mark them off, boom, boom, boom." That instant record keeping translates to more effective meetings with students, he adds.
Just make a note of these numbers and mark them off the bingo grid printed in the Echo every day.
As a group, campers search for the items and mark them off the list.
l If a symbol and number on your card match exactly to a symbol and number published in the paper, mark them off on your card.
If any numbers published in the paper appear on your bingo grid - mark them off! When you have all 15 numbers on your grid for the game in play, you can make a claim for that game and the weekly prize money.
If the symbol and number on your card match exactly to those published in paper then mark them off on your card.
If any of the published numbers appear on your gamecard, mark them off. If you are able to mark off all the numbers on any one of the six prize grids during the game, you win the prize above that grid.
If any of the published numbers appear on your match-and-win game, mark them off on the day they are published.
If any of the numbers appear on your gamecards, mark them off. If you can mark off all of the numbers on any one of the six prize grids during the game, you win the prize above that grid.
If any of the published numbers appear on your prize grid, simply mark them off on the day they are published.