Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
prōtĭnam (prōtĕnam), adv. [protinus], forthwith, immediately (ante-class.): protinam a protinus, continuitatem significans, Varr. L. L. 7, § 107 Müll.: exinde me illico protinam dedi, Plaut. Curc. 2, 3, 84; cf. id. Bacch. 3, 1, 7; id. Cas. 5, 3, 13; id. Pers. 4, 5, 8; Ter. Phorm. 1, 4, 13; Naev. ap. Non. 376, 13 (Com. Rel. p. 12 Rib.).