The meaning of UNDERLINE is to mark (something, such as a word) with a line underneath. How to use underline in a sentence.

UNDERLINE definition: to mark with a line or lines underneath; underscore. See examples of underline used in a sentence.

UNDERLINE definition: 1. to draw a line under a word, especially in order to show its importance: 2. to emphasize: 3…. Learn more.

1. To draw a line under: underlined the title of the book. 2. To emphasize; stress: The debate underlined the deep divisions within the party.

underline something to draw or print a line under a word, sentence, etc. The names of the winners are underlined in red. The word ‘not’ was heavily underlined.

His name was underlined in the book. The accident underlines our need for better safety procedures.

/əndəˈlaɪn/ IPA guide Other forms: underlined; underlining; underlines Definitions of underline verb draw a line or lines underneath to call attention to synonyms: underscore

underline meaning, definition, what is underline: to draw a line under a word to show that...: Learn more.

If you underline something such as a word or a sentence, you draw a line underneath it in order to make people notice it or to give it extra importance. Underline the following that apply to you. [VERB noun] …

Jan 17, 2026 · underline (plural underlines) A line placed underneath a piece of text in order to provide emphasis or to indicate that it should be viewed in italics or (in electronic documents) that it acts as a …