(noun:) One who is untrustworthy of time
You're late for class again. I don't like that Alli inside of you!
by mean dude October 11, 2008
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The ugliest, meanest, and most annoying person on this planet. Actually in the whole damn universe. She can never tell the difference between your/you’re, to/too/two, and there/their/they’re. She’s an actual dumbass. Also she’s so scary and gets possessed all the time. The only reason you’d be friends w her is so that she doesn’t put a curse on u and possess u.
Person 1: Is that Alli?
Person 2: Ya, Helen Keller’s lucky she doesn’t have to see this ugly bitch.
by Idk76458 May 8, 2020
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An Alli is one of the most amazing friends you will ever have. Even if you don't have an Alli as a friend, she will talk to you to brighten up your day. Shell isn't afraid to defend her friends or even someone that she doesn't know. She has the most beautiful smile. She may seem very confident on the surface, but she really isn't as confident as she seems. She sometime doubts herself. She thinks she is socially awkward, but only in certain cases. She is a dreamer, and is almost always wishing to escape reality. She looks forward to the future and she is always up for an adventure. She is a bright ray of sunshine and one of the biggest goofballs that you will ever meet. She isn't scared to apologize when she is in the wrong, but if someone does her wrong, she isn't quick but isn't slow to let them go. She believes in second chances, depending on the circumstances. She wants things to go her way, but when they don't she can get pretty upset. But she soon realizes that if it's meant to be, then it will be. She supports her friends no matter what, and she will always be there for anyone who needs her. If you are ever lucky enough to have an Alli in your life, love and cherish her, and never let go.
Person 1: Did you just see Alli?

Person 2: How could I not? She's so beautiful!
by beautifulworld17 April 13, 2019
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If you're Alli, every day's Halloween, and you're dressed up as the coolest kid in school. The best part is, Alli don't even know she's in costume. Alli's spirit animal is a boss ass cricket. If you spend too much time with her, you might just hear a chirp. Don't touch Alli's neck, she gets weird about that. In fact, if you don't know her well, don't touch her at all. If you do know her, and you're not Tommy, you also can't touch her. Alli is a die hard ENTP, so watch out. If on a dance floor, you might find Alli doing her signature dance move, the rapid arm thrust from her chest. Watch out for Alli's, some day they're gonna rule the world.
"Why are you obsessed with personality types, spirit animals, telling stories, spooning, and vine?"
"Oh, must have spent too much time with Alli."
by kissmyfemaledonkey December 3, 2015
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A really funny girl. She is an amazing swimmer and friend, and always is ready to tell a depressing story. She also loves PewDiePie and playing Crab Rave on her clarinet.
Wait, I hear Crab Rave! Oh, its jusr Alli
by yayeet597 April 13, 2019
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Alli is a great friend and a boy magnet. She is beautiful, and all the guys are begging to ask her out. She has a problem with saying no to them, so she always has a boyfriend. Even though she is a great friend and funny person, she is terrible at keeping secrets. Never trust your secrets with Alli. She has beautiful hair and eyes, and she knows how to be a girl boss.
by HotTamale103 February 13, 2018
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a girl who is PMSy ALLL THE TIME, and gets in a fight with you everyday, then acts all normal when she thinks its over.
omg, shes being such an alli.
alli is so alli
by booper3 June 13, 2009
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