adv. [f. ADULTEROUS + -LY2.] In an adulterous manner.
1599. Sandys, Europæ Spec. (1632), 41. Children adulterously begotten.
1643. Milton, On Divorce, II. ii. (1847), 138/1. A patent to wed another adulterously.
1723. Prideaux, Mahomet, 152 (T.). No man should be allowed adulterously to take to wife her that is at the same time the wife of another.