Antonyms for the phrase "get on good side of" could include "alienate," "antagonize," "displease," "distress," "disrespect," "embitter," "frustrate," "offend," "provoke," "repel," "spurn," and "upset." These words denote actions that push people away or create an atmosphere of dislike, mistrust, or hostility. Unlike "get on good side of," which implies positive intentions and efforts to build rapport or gain favor, these antonyms portray negative attitudes or behaviors that damage relationships or hinder social interaction. It is important to be mindful of how our words and actions affect others and strive to cultivate positive interactions with those around us.