70%RatingSave Gender Masculine Usage English Pronounced Pron. KOI [key·IPA] Meaning & History From a surname that meant "quiet, shy, coy" from Middle English coi. PopularityDetails Last ranked #992 in 2003 United States People think this name isRate·Details modern youthful informal common natural wholesome strange simple Categories currently out of the US top 1000, English adjectives, isograms, quiet, surnames, The Dukes of Hazzard characters, word names