Defined on DontLebronMe.com
-verb
canceling too close to a deadline; not leaving others the time to find a replacement.
-> “Rich lebronned his duty of being the DD, forcing us to walk home last night.”
-> “We planned on meeting you guys last night, but the babysitter had to lebron for some new guy she met.”
-> “Every single time you tell me I can count on you, you back out and screw me. All I’m saying is, if you promise me you’ll be there, Don’t Lebron Me.”
-> “The boss doesn’t tolerate lebrons.”
by DontLebronMe October 26, 2010

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1. (v.) to stab someone (or something) in the back by leaving in an extravagant manner, such as getting a one-hour TV special to let your decision be known.

2. (n.) A person with a giant ego that needs to be in control. Tends to leave loved ones, hurting those people in the process.
1. Friend: How are you planning to LeBron you're fiance?
Groom: I'm probably going to get up on the table during the rehearsal dinner and tell everyone that I'm leaving her. Afterwards, I'll slap her and pour wine all over her.

2. Friend: Are you okay?
Bride: No. Jack just left me at the rehearsal dinner.
Friend: It's okay. You don't want to marry a LeBron anyways.
by xprime3234 July 09, 2010

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to not finish
Was with my main squeeze but was so wasted I had to LeBron her
by AndyBorowitz June 14, 2011

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To screw someone over. To inadvertently cause harm to someone by not coming through in the clutch.
I'll pick you up at the airport. Don't worry bro I wouldn't lebron you like that.
by sherhag June 19, 2011

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Either an interjection used when one disapproves of something, or a verb meaning approximately the same thing as the slang form of SUCK or FAIL.
This movie LEBRONS!! You bought your jeans a size too small? LEBRON!!
by StarkLife June 15, 2011

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The Urban Dictionary T-Shirt

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someone who quits on you when you really need them, then move on to something better
girl1: Girl I don't see how you stay calm after he lebron you like that.
girl2: It dont matter, i guess he was to good, sometimes you have to let them go.
by jayboomboom July 10, 2010

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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In Manderin Chinese LeBron has been known to mean selfish prick and/or bastard.
Sean: Hey Matt pass the ball!

Matt: No

Sean: Dude you're being a total LeBron.
by LeBronhater23 April 24, 2010

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt