- 1underline something to draw a line under a word, sentence, etc. The names of the winners are underlined in red.
- 2to emphasize or show that something is important or true underline something The report underlines the importance of preschool education. underline how, what, etc… Her question underlined how little she understood him. underline that… The report underlined that the project enjoyed considerable support in both countries. it is underlined that… It should be underlined that these are only preliminary findings.
NAmE//ˈʌndərˌlaɪn//(also underscore)Verb Forms present simple I / you / we / they underline
he / she / it underlines
past simple underlined
-ing form underlining