Antonyms for "made pass at" could include words or phrases such as "ignored," "rejected," "turned down," "disregarded," or "avoided." These antonyms all suggest a lack of interest or enthusiasm on the part of one person towards another, as opposed to actively making a romantic or sexual advance. Other antonyms might include "acted professionally," "maintained boundaries," or "focused on platonic interactions," indicating a desire to keep relationships strictly professional or non-romantic. Ultimately, the opposite of making a pass at someone is to abstain from making any kind of romantic or sexual advance, leaving the relationship purely platonic.