Most often done around spring time, it is the act of asking someone to go to the prom with you.

It is a challenge every year to think up better and better ways to prompose.
Jack: Hey are you and Liz going to the prom next month?

Doug: Yeah man, I plan on promposing tomorrow morning on the PA.
by Jnac April 19, 2011
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A word referring to a proposal by either a male/femal to a prospective date for prom. "Promposals" can be as simplistic as passing a note or as elaborate as proposing with a flash mob with 10 friends in nothing but their underwear in front of the whole school.
Simplistic example of a Promposal: 'The Note/Text'

Bryan: "Hannah will you go to prom with me? Check 'yes' or 'no'

Hannah: "Can I have some time to think about this?"

Bryan: "Absolutely, take as much time as you need."

Elaborate example of a Promposal: 'The Post-it Car'

Bryan writes about one hundred different notes on 'Post-its' and places them on Hannah's car ensuring to have the words "Will you go to prom with me?" Somewhere on the vehicle where Hannah will notice it. The other notes are quotes, inside jokes, and any other thing that the proposer feels will help he/she obtain a date to the prom.
by WolfKid15 March 21, 2014
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(n)- a proposal from one person asking another person to the prom; is the combination of the words "prom" and "proposal."
Jake: I'm thinking about how I'll do my promposal...
Sean: Who're you going to ask?
Jake: Well, I haven't decided yet.
Sean: You have to decide before you ask someone to prom!
by TexanJackass January 22, 2006
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(n.) The act of contriving an elaborate plan to increase your chances of getting at prom, that may

1 end in utter, humilating failure, because high school relationships totally matter.

2 result in a pseudomarriage that comes with an order of epicburger with fries on the side.
1 Dude, Bob, your promposal sucked. "Mee ruv yoo rawwng time?" WTF Bob! She wasn't even Asian!

2 Jack's successful promposal to Jill was characterized by roses, baloons, making out, and youtube papparazzi.
by Bruceleesdaddy April 6, 2010
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To ask someone to prom, a formal dance held by most high schools in the United States and elsewhere.
I'm going to prompose to Jessica today, wish me luck!
by quenix May 2, 2018
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The act of asking your crush/lover in an elaborate way for a date to the “ultimate event of the year”
Padsters: Will you go to prom with me?
Sandu: Omg is this a promposal?
Sandu: Yes yes a 100 times yes
by monkeyman53 October 12, 2017
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A combination of the words “Prom” and “Proposal” used when one is going to ask another to prom. Some get “promposed” with grand gestures, or just a note or face to face asking.
Blake: “Should I do a grand gesture or a letter for my promposal to Sarah?”
Erin:”A grand gesture! I know Sarah loves those!”
Blake: “Thanks Erin, you’re the best”
Erin: “No problem, bud”
by moto moto likes u March 11, 2019
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