Meaning & History
Overall, Zenitsu can mean "goodness" or "run fast", but "善ぜん"("zen") and "逸いつ"("itsu") can mean different things individually. "善ぜん"("zen") often has good meanings like "goodness", "right thing" or "improve", while "逸いつ"("itsu") has both good and bad meanings. The good meaning are “run fast” or “have an outstanding talent.” The bad meanings are “lose a chance”, “deviate from the standard” or "let something escape".Zenitsu is the name of one of the main characters in Demon Slayer/Kimetsu no Yaiba.