Poker glossary
Underpair
An underpair is a hand where your paired hole cards are lower than any card on the board.
Full explanation
An underpair is a hand where your paired hole cards are lower than any card on the board.
Explanation. Holding 5‑5 on a board A‑K‑J, your pair is an underpair. It’s vulnerable and often losing unless the board pairs. Understanding underpairs helps avoid overbetting weak holdings and adjust pot control under marginal equity.