How do you spell Errant

Available Definitions:
1)  a. - Wandering; deviating from an appointed course, or from a direct path; roving.
2)  a. - Notorious; notoriously bad; downright; arrant.
3)  a. - Journeying; itinerant; -- formerly applied to judges who went on circuit and to bailiffs at large.
4)  n. - One who wanders about.