underline

Universal Words (also underscore especially in AmE) verb 1 [VN] to draw a line under a word, sentence, etc: The names of the winners are underlined in red. 2 to emphasize or show that sth is important or true: [VN] The report underlines the importance of pre-school education. * [Vwh-] Her question underlined how little she understood him. [also Vthat]