Lewis & Short

in-sons, ntis, adj.

  1. I. Guiltless, innocent; constr. with gen. or absol. (class., but not in Cic. or Cæs.): insontem probri accusare, Plaut. Am. 3, 1, 9: aliquem falso atque insontem arguere, id. Bacch. 3, 3, 10: publici consilii, Liv. 34, 32, 8: culpae, id. 22, 49.
    With abl. (rare): si regni crimine insons fuerit, Liv. 4, 15, 1.
    Absol.: purus et insons … si vivo, Hor. S. 1, 6, 69; Sen. Hipp. 486: amicus, Verg. A. 2, 93; 5, 350.
    Esp., as subst.: insontes, um, m., the innocent (opp. sontes): circumvenire, jugulare, Sall. C. 16, 3.
  2. II. Harmless (only poet.): Cerberus, Hor. C. 2, 19, 29: oliva, Stat. Th. 12, 682: casa, Ov. Tr. 3, 10, 66.