1. plural of underscore; the punctuation mark (_) used in writing, typing, or computing

1. third person singular present of underscore; emphasizes or highlights the importance of something
2. third person singular present of underscore; draws a line under text

Examples

• The filename contains several underscores to separate the words.
• Use underscores instead of spaces in your username.
• The report underscores the need for immediate action.
• Her speech underscores the importance of education.
• The teacher underscores key terms in the textbook.
• This incident underscores our safety concerns.
• The variable name uses underscores for clarity.