Tilt

general

Playing emotionally rather than logically — usually after a bad beat.

The single biggest leak for losing players. Recognise the warning signs and quit while you can think straight.

See also

Action
Your turn to act, or the overall betting activity in a hand.
Bad Beat
Losing a hand where you were a heavy statistical favorite.
Board
The community cards dealt face-up in the middle of the table.
Cooler
A hand where two players have very strong holdings — unavoidable losses happen.