Against a tight-passive opponent, exploit their cautious nature by betting more aggressively. Since they rarely initiate action and fold frequently, take advantage by stealing blinds and making them fold weaker hands. Focus on value betting when you have a strong hand, as they’re more likely to call with decent holdings. Avoid excessive bluffing, as they tend to only call when they have something substantial. Use position to control the pace of the game, applying pressure when they show weakness and extracting value when they seem willing to engage.