Full explanation — Muck
To muck your hand means to surrender your cards to the discard pile without revealing them, typically at showdown when you've lost and don't wish to expose your holdings. This strategic choice prevents opponents from gaining information about your playing style or specific hand ranges, which can be valuable for future hands. While a standard play for a losing hand, sometimes mucking a winning hand can be a powerful tactic if you want to conceal information about how you played a strong hand. Conversely, always showing your winning hands can build a loose image, encouraging more action. In most online poker platforms, mucking is often an automatic option, allowing players to quickly concede the pot without revealing their cards.