highlander n. + Add to list US //ˈhaɪˌɫændɝ// UK //hˈaɪləndɐ// high·lander SynonymsAntonymsEtymology Synonyms highlandupland Antonyms lowlandEtymology 1 From Highlands + -er, equivalent to a specific application of highlander.Etymology 2DEUHeilander→ENHighlander Americanized spelling of German Heilander.