Oppose Authority can be expressed in a variety of ways, such as 'REBEL', 'DEFY' and 'stick it to the man'. The term 'REBEL' is often used to describe someone who actively resists authority, while 'DEFY' implies a refusal to obey or comply with an order or rule. 'Stick it to the man' is a phrase that has been popularized in recent years, and it refers to a person's refusal to accept the status quo and their willingness to challenge the power structures of society.