usually short for tianna
a girl who is completely crazy. She is not afraid to make completely hilarious faces and be weird in front of teachers. Sometimes, even with her bold personality she does not always feel she is fitting in. She never usually starts drama, but will speak up for herself. she always has good grades. She is sarcastica, and sometimes says things , but never means for them to be taken seriously.
(example)
you: look at that girl over there pretending to be an ostrich
me: she looks like a tia
by shewantthebooty. January 14, 2014

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tia, meaning earth in old aboriginal culture
tia is our mother
by brrapx October 12, 2011

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Tia is a short form of Tiana. Tia is a female name. Most Tias have dark hair and eyes and they're parents aren't American or Canadian. Tias can get mad easily and when they are they're really mad. So don't get on they're nerves! They normally have long hair too and aren't into being popular or anything. They are great people though and won't let you down if you're they're your friend.
Person #1: Hey look at her she has long dark hair. Must be a Tia.

Person #2: She is. But she can get really mad if you mess with her, so don't ask her out.
by Awesomest Person Ever!😋 February 07, 2015

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This is awkward
T.I.A one of the character tamaras main phrases on the TV show awkward
by acroxislove May 18, 2014

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She loves corn.
Person 1: wow! that girl loves corn!
Person 2: Obviously, she is a tia
by Anna Schmidt January 21, 2012

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1. This Is Awkward
(pronounced like a name.....tee-aah)
1. Joe & Joanne: (grunts and noises on the bed)

Joe: Joanne this sex is so good! (Joanne's parents walk in)

Joanne's parents: WTFF!!!

Joe & Joanne: ...T.I.A...
by EAZi January 12, 2011

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short for "Thanks In Advance"

mostly used in the software pirate community on Bulletin Board Systems. Pirates would request software and since it may be some time before someone actually uploads it, they would write TIA after the request to express gratitude
Can you please upload a copy of Windows XIII Ultimate Edition complete with serial. TIA
by superjonbot March 01, 2010

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