adv. [f. ADULTERATE a. + -LY2.] In an adulterate manner; with an admixture of falseness; corruptly.
a. 1614. Donne, Βιαθανατος, 46. Every Sect will a little corruptly and adulterately call their discipline Naturall Law.
1818. in Todd, and subseq. Dicts.