The phrase "doest a turn" typically means to perform a task or take a turn at something. Antonyms for this phrase might include words and phrases such as refuse, neglect, avoid, skip, or shirk. If someone refuses to do a turn, they might be considered lazy or uncooperative. Likewise, if someone neglects to do a turn, they might be seen as unreliable or thoughtless. Avoiding a turn could be a sign of anxiety, while skipping or shirking a turn is often seen as a deliberate act of defiance or disobedience. Of course, the best outcome is for everyone to do their fair share and take turns when needed.