a. [ Cf. F. inadvertant. See 2d In-, and Advert. ] Not turning the mind to a matter; heedless; careless; negligent; inattentive. [ 1913 Webster ]
An inadvertent step may crush the snail That crawls at evening in the public path. Cowper.
-- In`ad*vert"ent*ly, adv. [1913 Webster]