Answer: antagonists

AnswerCrossword Clue
ANTAGONISTSPunch and Judy, for example
antagonistsA muscle whose action counteracts that of another specified muscle
antagonistsA person who actively opposes or is hostile to someone or something; an adversary
antagonistsANTAGONIST, one that contends with or opposes another
antagonistsA substance that interferes with or inhibits the physiological action of another