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15.
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
209 39
 
16.
to fail to execute at a critical juncture in an athletic event.
Boy, Lebron James really lebroned that potential game winning lay-up last night.
by Harry Stanfeld May 01, 2008
323 162
 
17.
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
193 36
 
18.
to not finish
Was with my main squeeze but was so wasted I had to LeBron her
by AndyBorowitz June 14, 2011
222 79
 
19.
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
171 40
 
20.
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
156 28
 
21.
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
201 81