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: 1300–50; Middle English erraunt < Middle French, Old French errant, present participle of errer, edrer to travel < Vulgar Latin *iterāre to journey, for Late Latin itinerārī, derivative of iter, stem itiner- journey (see itinerary); confused with Middle French errant, present participle of errer to err