Defiant \De*fi"ant\, a. [Cf. F. d['e]fiant, p. pr. of d['e]fier. See Defy.]

Full of defiance; bold; insolent; as, a defiant spirit or act.

In attitude stern and defiant. --Longfellow. -- De*fi"ant*ly, adv. -- De*fi"ant*ness, n.

Source: Webster's Revised Unabridged Dictionary (1913)