You are so _______! You never agree with the rest of us!

Possible responses:
contraband
contradict
contrarian
contrary
contrast
counterbalance
counterclockwise
counterexample
counterfeit
counterintuitive
I think it's contrary since it is an adjective, but contrarian sounds better in the sentence.

Meaning contrary sounds confusing and incorrect

Contrarian is correct.

Based on the context of your sentence, it seems that the word that best fits the blank would be "contrarian." While "contrary" is also a valid option, "contrarian" specifically describes someone who opposes or disagrees with the majority or commonly accepted opinions. It implies a deliberate act of going against the norm. However, both "contrarian" and "contrary" could be used in your sentence, depending on the intended meaning.