It's informal and you would usually use it via text messaging. It means 'talk to you later'
by I dunno.. xD October 27, 2015
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Short for "Talk To You Later".

commonly used on massively multiplayer online games and chat rooms.
Dood1: Hey man i g2g eat, TTYL!

Dood2: Sure bud, bonapetit!
by FLking May 21, 2007
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A abbreviation of the sentence talk to you later mostly used in text messages between people most teens use it.
Teen 1- Ok i'll ttyl

Teen 2- Ok bye :-)
by PhandodiePanic!isLife!!! January 7, 2017
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TTYL means Talk To You Later. Mostly used in text conversations.
TTYL bye
by CAT ATTACK!! September 16, 2017
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TTYL= tiny tits you loser
by xzfnvfosngfo April 27, 2011
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Frank:''That was a great gym session my dude, when I get home I'll text you my secret protein shake recipe!''

Tom:''Yeah that was intense. Sounds good, ttyl!''
by saharaspberry November 14, 2018
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