a. [ OE. erraunt, errant, errand, equiv. to E. errant wandering, which was first applied to vagabonds, as an errant rogue, an errant thief, and hence passed gradually into its present and worse sense. See Errant. ] Notoriously or preëminently bad; thorough or downright, in a bad sense; shameless; unmitigated;
I discover an arrant laziness in my soul. Fuller. [ 1913 Webster ]
An arrant honest woman. Burton. [ 1913 Webster ]
adv. Notoriously, in an ill sense; infamously; impudently; shamefully. L'Estrange. [ 1913 Webster ]