To beseech someone means to ask them for something in an urgent, pleading way, usually because you really need their help or mercy. When you beseech someone, you're appealing to them with emotion and desperation, hoping they'll be moved by how much it matters to you.

In classic stories, characters often beseech kings or judges for mercy: “I beseech you, spare my village!” The word carries a feeling of humility and earnestness. You might beseech a friend to forgive you after a serious mistake, or beseech your parents to let you keep a stray dog you found.

The word has a formal, almost old-fashioned sound. You wouldn't beseech someone to pass the salt at dinner. You'd beseech them for something important: understanding, forgiveness, or help in a crisis. When someone beseeches you, their tone and expression make clear that your answer really matters to them. The word suggests both the urgency of the request and the hope that the person being asked will respond with compassion.