Top Definition
acronym for totally not invited.
What?! You guys went to the movies with out me ? T.N.I !!
by Kat_Attack December 27, 2009
TNI means "till next insight" used on many MMORPG's. Also meaning, how much experience till your next level?
Hey, how much TNI?
by CSTRIKEshogun August 19, 2003
Tactical Nuke inbound

this means that a really fat human is coming ur way to bother u
look that TNI is coming our way.
by jokes alot April 06, 2011
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