a. Obs. rare. [f. as prec. + -OUS.] Full of energy; fruitful.
1570. Levins, Manip., 226. Foysonouse, foecundus.
1602. Warner, Alb. Eng., XIII. lxxviii. (1612), 324. Union, in breefe, is foysonous, and discorde works decay.
