Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ĭn-alpīnus, a, um, adj., living upon the Alps, Alpine: populi, Plin, 3, 5, 7, § 47: gentes, Suet. Aug. 21.
Subst.: Inalpīni, ōrum, m., inhabitants of the Alps, Brut. ap. Cic. Fam. 11, 4, 1; Plin. 3, 4, 5, § 37.