The significant other of a close friend, or the friend of a significant other.
See friend boyfriend girlfriend in-law
Taylor: So why are you friends with Corey?
Sena: Oh, because he's with Linda and she's my best friend, so Corey's my in-friend.
by Taylor N. Sena February 26, 2008

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Top Definition
When you meet a person who is so amazingly awesome you want to be best friends with them. Almost like being in love with someone but without the love part
Omg that guy watches Firefly as well I am so in friend with him!
by mrscobb22 July 13, 2011

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

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

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

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