The phrase "caves into" implies giving in or surrendering, but its antonyms denote resistance or standing firm. Some of the antonyms for "caves into" are holding out, standing up, and refusing to budge. Other antonyms include challenging, confronting, and pushing back. By holding out, people can maintain their positions or beliefs, while standing up signifies bravery and courage. Both challenging and confronting refer to facing the issue head-on, while pushing back denotes pushing against the opposing force. Overall, the antonyms for "caves into" signify a willingness to fight back and resist pressure, rather than surrendering or giving up.