in-fructŭōsus, a, um, adj., unfruitful (post-Aug.).
I Lit.: vites, Col. Arb. 8, 4: cultura, id. 11, 2, 32. —
II Trop., fruitless , useless : preces, Plin. Ep. 8, 23: epistula, Sen. Contr. 3, 19 fin. : militia, Tac. H. 1, 51.— Adv.: infructŭōsē , fruitlessly , uselessly , Hier. Ep. 12, n. 16; Aug. Ep. 67, n. 6.— Comp. , Sid. Ep. 1, 9.