The correct reading is ごうまん, with both kanji using their on'yomi. 傲 (ごう) means proud or arrogant, and 慢 (まん) also implies pride or conceit. おうまん or こうまん are common misreadings of 傲. This word describes someone who has an excessively high opinion of themselves and looks down on others, often displaying disdain.

正しい読みはごうまんで、両方とも音読みです。傲（ごう）は傲り高ぶる、慢（まん）は怠ける・おごるという意味です。おうまんやこうまんは傲の誤読です。この言葉は、自分を過大評価し他人を見下す、高慢な態度や性格を指します。