īn-fīrmus adj.
with comp.and sup, not strong, weak, feeble, infirm: vires: corpus annis, S.: classis: oves, H.: ex gravi morbo, ill: infirmi ad resistendum, Cs.—Fig., weak, superstitious, pusillanimous, inconstant, light-minded: animus, Cs.: sum paulo infirmior, H.: quorum concursu terrentur infirmiores, Cs.—Of no weight, weak, trivial, inconclusive, invalid: nuptiae, T.: ad probandum res: cautiones: infirmiore vinculo (amicitiae) contrahi, L.: de causis condemnatus infirmissimis.