Lewis & Short

in-dŏcĭlis, e, adj. [2. in-doceo].

  1. I. Difficult to be taught, that cannot be taught, indocile.
    1. A. Lit. (class): quia nimis indociles quidam tardique sunt, Cic. N. D. 1, 5, 12; so, hebetes et indociles homines, Quint. 1, 1, 2: hirundines, Plin. 10, 45, 62, § 128.
      Poet. with gen.: pacis, Sil. 12, 726.
      With dat.: quieti, Juv. 11, 11.
      With inf.: pauperiem pati, Hor. C. 1, 1, 18: loqui, Luc. 5, 539; Sil. 13, 310: teneri, Stat. Th. 6, 313.
      Of the things to be taught: sed incredibilis quaedam ingenii magnitudo non desideravit indocilem usus disciplinam, Cic. Ac. 2, 1, 2.
    2. B. Transf., untaught, unlearned, ignorant (poet. and post-Aug.): genus, Verg. A. 8, 321: agricola caeli, Plin. 18, 25, 60, § 226.
      Of inanim. and abstr. things, untaught, rude: indocili numero, Ov. Tr. 4, 1, 6.
      Unapt, unfit for any thing: arbores nasci alibi, quam ubi coepere, Plin. 14 prooem. init. § 1.
  2. * II. (= non doctus.) Untaught, not shown: et sciat indociles currere lympha vias, Prop. 1, 2, 12.