What does "errant" mean?

Errant: Notorious; notoriously bad; downright; arrant. Would make me an errant fool. B. Jonson.

Additional senses

  1. 2.(Eng. Law) Journeying; itinerant; -- formerly applied to judges who went on circuit and to bailiffs at large. Mozley & W.
  2. 3.One who wanders about. [Obs.] Fuller.

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