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1. To be in or arise into a standing position. I hope we don't have to stand up for much longer, my legs are getting tired. Tom, please stand up and tell the class about your vacation.
2. To pull or place someone or something into a standing or upright position. In this usage, a noun or pronoun can be used between "stand" and "up." After I fell, my teacher stood me up and brushed off my jacket. OK, the bookshelf has been assembled. Let's stand it up and move it against the wall.
3. To fail to meet someone for a date, meeting, or appointment, especially without telling them. In this usage, a noun or pronoun can be used between "stand" and "up." I'm sorry I stood you up, but I had a family emergency last night. Tom is really bad about standing up his dates.
4. To remain or prove to be valid, credible, or defensible. The video definitely makes him look suspicious, but it wouldn't stand up in court. I just don't think her early work stands up in comparison to her modern masterpieces.
5. To have durability and longevity; to last over time. We've had this car for nearly 20 years, and it still stands up. It looks slick, but it won't stand up to the extreme conditions of the local environment.
stand someone up
1. to place someone into a standing position. I tried to stand him up, but he was just too tired. Let's try to stand up Timmy and get him awake.
2. to fail to show up for a meeting or a date. He stood her up once too often, so she broke up with him. Tom stood up Mary once, and she never forgave him.
1. to arise from a sitting or reclining position. He stood up and looked across the valley. she had been sitting for so long that it was a pleasure to stand up.
2. to be in a standing position. I've been standing up all day and I'm exhausted. I stood up throughout the whole trip because there were no more seats on the train.
3. to wear well; to remain sound and intact. This material just doesn't stand up well when it's washed. Her work doesn't stand up under close scrutiny.
4. [for an assertion] to remain believable. His testimony will not stand up in court. When the police checked the story, it did not stand up.
1. Remain valid, sound, or durable, as in His claim will not stand up in court, or Our old car stood up well over time. [Mid-1900s]
2. Fail to keep a date or appointment with, as in Al stood her up twice in the past week, and that will be the end of their relationship. [Colloquial; c. 1900] Also see stand up for; stand up to; stand up with.
1. To rise to an upright position on the feet: When the judge entered the room, everyone stood up.
2. To cause something or someone to assume an upright position: I stood up the book on its end. The police tried to stand the drunken drivers up on their feet.
3. To remain valid, sound, or durable: The claim will not stand up in court. Our old car has stood up well over time.
4. To fail to keep a date or appointment with someone: My roommate stood up the prospective students who had wanted to tour the campus. My blind date stood me up, so I had to eat alone.
5. stand up for To defend or support someone or something: If you do not stand up for yourself, people will not respect you. The candidate stood up for the rights of migrant workers.
6. stand up to To confront someone or something fearlessly: The citizens were too afraid to stand up to the cruel dictator.
7. stand up with To act as best man, maid of honor, or matron of honor for some groom or bride at a wedding: I stood up with my old college roommate when he got married. She stood up with her sister at the wedding.
stand someone up
tv. to break a date by not showing up. He stood up his date while he played basketball with the guys.