This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. To draw a line under; emphasize or cause to stand out; underscore.

v. To emphasize; stress.

n. A line under something, such as a symbol, word, or phrase, used to indicate emphasis or italic type.

n. A line placed underneath a piece of text in order to provide emphasis or to indicate that it should be viewed in italics or that it acts as a hyperlink

n. An _ character

v. To draw a line underneath something, especially to add emphasis; to underscore

v. To emphasise or stress something

v. To influence secretly.

adj. Passing under a railway line.

v. To mark a line below, as words; to underscore.

v. To influence secretly.

v. Emphasize or call attention to; highlight.

n. The lower line of the body: used in describing the “points” of a horse.

To mark underneath or below with a line; underscore: as, to underline words in a letter.

To influence secretly.

n. The advance announcement of the production of a play, placed under any theatrical advertisement of a regular performance.

v. give extra weight to (a communication)

v. draw a line or lines underneath to call attention to

n. a line drawn underneath (especially under written matter)

"The underline is a hyperlink, and this is a shameless plug for it."

underlined    underlines    underlining   

emphasise    punctuate    stress    accentuate    emphasize    accent    mark    stroke   

underscore    highlight    subordinate    wretch   

politburo    hajj    supervillain    blowhard    bonus    pillowslip    wavery    Life    foreknowledge    batlike