fruitless Copy link Outline I. Lit.II. Fig.1. irrĭtus (in Cic. = invalid, without legal effect)2. infructuōsus (rare) • fruitless: I. Lit.: stĕrĭlis, casus: v. unfruitful, barren. II. Fig.: without result: 1. irrĭtus (in Cic. = invalid, without legal effect): a f. undertaking, i. inceptum, Liv. 29, 36, extr.: f. gifts, i. dona, Virg. G. 4, 519: f. prayers, i. preces, Plin. jun.: v. vain. 2. infructuōsus (rare): f. entreaties, inf. preces, Plin. Ep. 8, 23, 6: a f. campaign, inf. militia, Tac. H. 1, 51: see also useless. Phr.: to undertake a f. labour, actum or acta agere (prov.), Cic. Fam. 9, 18; Am. 22, 85: after f. attempts to accomplish a purpose, infectis iis quae quis destinaverit, Caes. B. C. 1, 33.