What is the Latin word for uncivilized?

The usual Latin words for “uncivilized” are incultus, rudis, immānis; also agō. The right choice depends on the sense; see the distinctions below.

English → Latin

“uncivilized” in Latin

incultusuntilled, uncultivated; neglected; unadorned, unpolished rudisrough, raw, uncultivated; unrefined, unskilled, awkward; rude immānisimmense, enormous, huge, vast; brutal, inhuman, frightful, savage agōto act, to behave; to do; to make (something that does not continue to exist after the maker stops)

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

uncivilized

incultus: rudis (uncultivated, rude): ad humanum cultum civilemque nondum deductus (after Cic., De Or., 8): politioris humanitatis expers (without the refinement that softens men’s manners): *ad humanitatem nondum informatus: qui propriis humanitatis artibus politus non est (after Cic., Rep., 1, 17). An uncivilized nation, gens barbara, immanis, or immanis atque barbara (opposed to humana atque docta): uncivilized life, vita fera agrestisque: uncivilized ages, minus erudita saecula (Cic., Rep. 2, 10, with reference to learning).

Quick answer

What is the Latin word for uncivilized?: The usual Latin words for “uncivilized” are incultus, rudis, immānis; also agō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.