deviating from the regular or proper course; erring; straying.
journeying or traveling, as a medieval knight in quest of adventure; roving adventurously.
moving in an aimless or lightly changing manner: an errant breeze.
Origin of errant
1300–50;Middle Englisherraunt < Middle French,Old Frencherrant, present participle of errer, edrer to travel < Vulgar Latin*iterāre to journey, for Late Latinitinerārī, derivative of iter, stem itiner- journey (see itinerary); confused with Middle Frencherrant, present participle of errer to err
Related formser·rant·ly, adverbnon·er·rant, adjectivenon·er·rant·ly, adverbun·er·rant, adjectiveun·er·rant·ly, adverbCan be confusedarranterrant
mid-14c., "travelling, 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" (see ion); 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.