Which word best describes someone who is unwilling to comply according to the provided definition?

The term "recalcitrant" is used to describe someone who is stubbornly resistant to authority, control, or guidance. It is often applied to individuals who refuse to comply with rules, orders, or requests, making it the most fitting word for someone who shows an unwillingness to comply according to the given definition.

In contrast, "diligent" refers to someone who is hardworking and attentive, indicating a positive approach to tasks rather than resistance. "Compliant" conveys a willingness to comply and obey, which is the opposite of being unwilling. "Agreeable" describes a person who is cheerful and accommodating, suggesting a tendency to conform to others’ wishes rather than resisting. Therefore, "recalcitrant" effectively captures the essence of noncompliance.