[COUNTER- 2.] Agency in opposition to (something).
c. 1838. De Quincey, Shakes., Wks. (1863), XV. 39. Counter-agencies to the native majesty of the subject. Ibid. (1858), Whiggism, Wks. (1862), V. 42. In fierce counter-agency to the scorn of the unworthy.