Abbreviation for Tight Aggressive Poker. It is an acronym mostly used in online poker to describe a playing style. A tight aggressive player is playing good starting hands and will play them aggressively by betting and raising both pre-flop and post-flop.
By being selective with the hands a TAG player chooses to play, it usually results in having the best hand at showdown. This aggressive style also allows you to pick up lots of small pots when you’ve raised before the flop and make a continuation bet on the flop to take down the pot.
EXAMPLE: “I was playing TAG so my table image was probably perceived as a nit.”