Select one word for the following group of words.

Open refusal to obey orders

Defiance

The one-word substitution for the group of words "open refusal to obey orders" is defiance.

• Defiance is a bold or open resistance to authority or to any opposing force.
• Compliance is the action or fact of complying with a request or command.
• Adherence is the state of sticking to something closely or firmly.
• Obedience is the act of obeying someone or something.

The word defiance is the most appropriate because it specifically refers to an open and deliberate refusal to obey orders. The other words do not have the same connotation of being a refusal to obey orders.