The phrase "gave someone the slip" means to escape or evade someone's watchful eye or attention. The antonyms for this phrase can be "caught," "tracked down," "captured," "apprehended," "located," or "identified." If someone is trying to hide from others, these antonyms can be used to describe the act of being found or caught. The opposite of slipping away is being caught or found, making these words perfect antonyms for "gave someone the slip." These antonyms can be used in various contexts, including hiding from the authorities, avoiding a person or group, or simply playing a game of hide and seek.