To bet into someone is to make a bet when it’s your turn but they were last to act.
Explanation. Betting into occurs when you lead a street after your opponent checked—meaning you bet into them rather than checking to them. It’s used to seize control, build the pot, or exploit perceived weakness. Intermediate players analyze board texture, opponent tendencies, and position to decide optimal bet-into frequencies. Leading into passive opponents can be effective but may expose you if misused.