Definitions

1. noun

A horizontal line or stroke used to indicate a break or to set something off; a mark or stroke used to indicate absence of something, especially a letter or character.

“The writer used an underscore to indicate that the character was missing in the text.”

2. verb

To indicate or show something by a horizontal line or stroke; to indicate absence of something, especially a letter or character.

“The editor underscored the error in the manuscript with a red line.”

3. verb

To emphasize or stress something.

“The professor underscored the importance of the assignment by giving it extra points.”

4. adverb

In a way that emphasizes or stresses something.

“She underscored her point by repeating it several times.”