The antonyms for "high fives" are "low fives" or "down low" greetings. Unlike high fives, which involve raising the hands up high and slapping palms together, low fives are done by extending the hands low and slapping them together below waist level. Down low greetings, on the other hand, involve an intricate handshake or fist bump. These gestures are often used as a sign of friendship, respect, and mutual understanding. They are popular among sports teams, friends, and colleagues who want to show camaraderie without being too formal or dramatic. Overall, high fives, low fives, and down low greetings provide an alternative way of expressing positivity, support, and happiness.