impiger

impiger (in-p-) gra, grum, adj.,

not indolent, diligent, active, quick, unwearied, indefatigable, energetic: mercator, H.: ingenium, S.: in scribendo: ad labores: militiā, L.: militiae, Ta.: hostium Vexare turmas, H.: Impiger constitit, i. e. after a rapid flight, O.