a. [ L. adverbialis: cf. F. adverbial. ] Of or pertaining to an adverb; of the nature of an adverb;
n. The quality of being adverbial. Earle. [ 1913 Webster ]
v. t. To give the force or form of an adverb to. [ 1913 Webster ]
adv. In the manner of an adverb. [ 1913 Webster ]