[er.rant] adj [ME erraunt, fr. MF errant, prp. of errer to err & errer to travel, fr. LL iterare, fr. L iter road, journey--more at itinerant] (14c) 1: traveling or given to traveling "an ~ knight"
2. a: straying outside the proper path or bounds "an ~ calf" b: moving about aimlessly or irregularly "an ~ breeze" c: deviating from a standard (as of truth or propriety) "an ~ child" d: fallible -- errant n -- er.rant.ly adv