Errant
Middle English (in errant (sense 2)): errant (sense 1) from Latin errant- ‘erring’, from the verb errare ; errant (sense 2) from Old French errant ‘travelling’, present participle of errer, from late Latin iterare ‘go on a journey’, from iter ‘journey’. Compare with arrant.
wiktionary
From Middle English erraunt, from Anglo-Norman erraunt, from Old French errant, from Latin errans(“wandering”). Doublet of arrant.
etymonline
errant (adj.)
mid-14c., "traveling, roving," from Anglo-French erraunt, from two Old French words that were confused even before they reached English: 1. Old French errant, present participle of errer "to travel or wander," from Late Latin iterare, from Latin iter "journey, way," from root of ire "to go" (from PIE root *ei- "to go"); 2. Old French errant, past participle of errer (see err). The senses fused in English 14c., but much of the sense of the latter since has gone with arrant.
