Lewis & Short

2. adjūtor, ōris, m. [adjuvo], one who helps, a helper, assistant, aider, promoter (class. through all periods).

  1. I. In gen.: hic adjutor meus et monitor et praemonstrator, Ter. Heaut. 5, 1, 2: ejus iracundiae, id. Ad. 1, 1, 66: ad hanc rem adjutorem dari, id. Phorm. 3, 3, 26: adjutores ad me restituendum multi fuerunt, Cic. Quint. 9: in psaltria hac emunda, Ter. Ad. 5, 9, 9: honoris, Cic. Fl. 1: ad praedam, id. Rose. Am. 2, 6; so id. de Or. 1, 59; id. Tusc. 1, 12: tibi venit adjutor, id. N. D. 1, 7: L. ille Torquatus auctor exstitit, id. Sull. 34; id. Off. 2, 15; 3, 33; id. Fin. 5, 30; id. Att. 8, 3; 9, 12; Caes. B. C. 1, 7; Sall. J. 82; Liv. 29, 1, 18: nolite dubitare libertatem consule adjutore defendere, with the aid of the consul, Cic. Leg. Agr. 16; and so often, id. Verr. 1, 155; id. Font. 44; id. Clu. 36; id. Mur. 84.
  2. II. Esp., a common name of a military or civil officer, an aid, adjutant, assistant, deputy, secretary, etc.: comites et adjutores negotiorum publicorum, Cic. Q. Fr. 1, 1, 3: dato adjutore Pharnabazo, Nep. Con. 4; so id. Chabr. 2; Liv. 33, 43; Suet. Aug. 39; id. Tib. 63; id. Calig. 26: rhetorum (i. e. hypodidascali), Quint. 2, 5, 3; Gell. 13, 9; and in the inscriptions in Orell. 3462, 3200 al.; under the emperors an officer of court, minister (v. Vell. 2, 127; cf. Suet. Calig. 26); usu. with ab and the word indicative of the office (v. ab fin.): adjutor a rationibus, Orell. Inscr. 32: a sacris, ib. 2847: a commentariis ornamentorum, ib. 2892.
    Also with gen.: adjutor cornicularii, ib. 3517: haruspicum imperatoris, ib. 3420 al.
    In scenic language, adjutor is the one who, by his part, sustains or assists the hero of the piece (πρωταγωνιστής), to which the class. passage, Cic. Div. in Caecil. 15, refers; cf. Heind. ad Hor. S. 1, 9, 46: in scena postquam solus constitit sine apparatu, nullis adjutoribus, with no subordinate actors, Phaedr. 5, 5, 14; Suet. Gramm. 18; Val. Max. 2, 4, no. 4.