Obs. [a. OF. efficace, ad. L. efficācia, f. efficax; see next.] a. Efficacy. b. Effect. c. Active duty.
a. 1225. Ancr. R., 246. Ich habbe iseid of ham [tears] her uour muchel efficaces.
a. 1491. Caxton, Vitas Patr. (W. de W.), I. Prol. Vertues, In the whiche was all efficace of verytee.
1606. Sylvester, Du Bartas (1621), 327. By the touch of their liue efficace.
1678. Butler, Hud., III. II. 602/128. Saints, That Fine, like Aldermen, for Grace To be excus’d the Efficace.
1712. G. Wheler, Liturgy, 94. All-holy Spirit, his Life-giveing Efficace.
