69%RatingSave Gender Feminine Usage English (Modern) Pronounced Pron. KAY-lin [key·IPA] Meaning & History Combination of the popular phonetic elements kay and lyn. Related NamesFamily Tree·Details VariantsCailyn, Kaelyn, Kailyn, Kalyn, Kaylen, Kaylin, Kaylynn, Cailin PopularityDetails Last ranked #982 in 2013 United States People think this name isRate·Details modern youthful natural wholesome refined complex Categories combinations, currently out of the US top 1000, ends in -lyn, modern English