Solid with an aggresive touch

Most good players, by the way, are solid.
The opposite of the tight player, as you would imagine from the name, is the loose player. He'll play most of the pots. Often he'll be drunk. You need patience to play him, and you require a good hand to bet because he'll call you with extremely weak hands.
The perfect opponent to face is the Calling Station. He's similar to a loose drunk player, but he rarely bets. Most of the time, he just checks and calls. And if you cant beat a man who always checks to you ... you can't beat anyone.