Avouch

v. t. [imp. & p. p. AVOUCHED; p. pr. & vb. n. AVOUCHING.] [Norm. Fr. advoncher, O. Fr. avochier, avocher, advoquer, avoquer, avouer, from a, for ad, and Norm. Fr. voucher, O. Fr. vochier, vocher, to call, vouch; Lat. advocare, to call to, from ad and vocare, to call. See VOUCH.]

1Sense 1. To declare or assert with positiveness; to affirm in favor of; to maintain or support. “As he there . . . often avouches and professes.” Barrow.

Such antiquities could have been avouched for the Irish. Spenser.

2Sense 2. To sanction, vindicate, or justify. [Obs.] Shak.