The Collaborative International Dictionary
Adversatively
Adversative \Ad*ver"sa*tive\, a. [L. adversativus, fr. adversari.] Expressing contrariety, opposition, or antithesis; as, an adversative conjunction (but, however, yet, etc. ); an adversative force. -- Ad*ver"sa*tive*ly, adv.
Wiktionary
adversatively
adv. In an adversative manner