Probably from the same as har; elated; hence, arrogant -- haughty, proud.
see HEBREW har
H3093. yahir
יָהִיר adjective proud, haughty, שְׁמוֺ לֵץ יָהִיר זֵד Proverbs 21:24 a presumptuous man, (who is) haughty, scoffer is his name (+ זָדוֺן בְּעֶבְרַת עוֺשֶׂה); יִנְוֶֿ֑ וְלֹא יָהִיר גֶּבֶר Habakkuk 2:5.