From Middle English hegtide, from Old English hēahtīd (“a holy day”), equivalent to high + tide. Cognate with Dutch hoogtijd, German Hochzeit, Danish højtid, Swedish högtid, Icelandic hátíð. Compare also highday, hockday.
"hightide." YourDictionary, n.d. Web. 13 June 2018. <http://www.yourdictionary.com/hightide>.
hightide. (n.d.). Retrieved June 13th, 2018, from http://www.yourdictionary.com/hightide