Which term describes someone who is habitually disobedient and oppositional?

The term that best describes someone who is habitually disobedient and oppositional is "froward." This word specifically refers to a person who is difficult to deal with, stubbornly disobedient, or contrary in behavior. It encapsulates a sense of willfulness and defiance, aligning perfectly with the idea of being oppositional.

In contrast, "feckless" refers to someone lacking initiative or strength of character, which does not inherently imply disobedience. "Fractious," while it can describe someone who is irritable or quarrelsome, does not specifically convey the habitual nature of disobedience as strongly as "froward." "Fetid" relates to a foul smell and is unrelated to behavioral characteristics. Thus, "froward" stands out as the most precise descriptor for someone who is consistently troublesome or difficult due to their disobedience.