'Instigate' definitions:

Definition of 'instigate'

From: WordNet
verb
Provoke or stir up; "incite a riot"; "set off great unrest among the people" [syn: incite, instigate, set off, stir up]
verb
Serve as the inciting cause of; "She prompted me to call my relatives" [syn: prompt, inspire, instigate]

Definition of 'Instigate'

From: GCIDE
  • Instigate \In"sti*gate\, v. t. [imp. & p. p. Instigated; p. pr. & vb. n. Instigating.] [L. instigatus, p. p. of instigare to instigate; pref. in- in + a root akin to G. stechen to prick, E. stick. See Stick.] To goad or urge forward; to set on; to provoke; to incite; -- used chiefly with reference to evil actions; as, to instigate one to a crime. [1913 Webster]
  • He hath only instigated his blackest agents to the very extent of their malignity. --Bp. Warburton.
  • Syn: To stimulate; urge; spur; provoke; tempt; incite; impel; encourage; animate. [1913 Webster]