Stand Pat Meaning
(intransitive, blackjack) To stop hitting.
Example: 1920, Peter B. Kyne, The Understanding Heart, Chapter IV
With a mixed hand and the highest card the curse of Scotland, I've seen that man stand pat in a game with four millionaire mining men.
2012, "Asia's Local Growth Dilemma", Wall Street Journal, by Alex Frangos, 21st of July:
China has cut rates and allowed banks to boost lending, while some countries, such as South Korea have stood pat, fearful that inflation pressures could reignite.
After getting a hand of 20, the player stood pat.