1
: a line at right angles to a goal line or end line and marking a side of a court or field of play for athletic games
2
a
: a line of goods sold in addition to one's principal line
b
: a business or activity pursued in addition to one's regular occupation
3
a
: the space immediately outside the lines along either side of an athletic field or court
b
: a sphere of little or no participation or activity
—usually used in plural
Examples of sideline in a Sentence
Noun
She makes and sells jewelry as a sideline.
Recent Examples on the Web
Peter Beven, Forbes.com, 26 June 2025
The event will also feature a lineup of former college and professional stars coaching on the sidelines.
—Cameron Priester, Sun Sentinel, 25 June 2025
Los Angeles Times, 27 June 2025
The audiobook narrators who have breathed life into our stories have already been sidelined by cheaper, simpler AI imitators.
—Literary Hub
june 27, Literary Hub, 27 June 2025
See All Example Sentences for sideline
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Noun
This is a call to elevate capability, not sideline HR.
—Peter Beven, Forbes.com, 26 June 2025
The event will also feature a lineup of former college and professional stars coaching on the sidelines.
—Cameron Priester, Sun Sentinel, 25 June 2025
Verb
Clark had recently returned from a quad injury that kept her sidelined for five games.
—Los Angeles Times, 27 June 2025
The audiobook narrators who have breathed life into our stories have already been sidelined by cheaper, simpler AI imitators.
—Literary Hub
june 27, Literary Hub, 27 June 2025
See All Example Sentences for sideline
Cite this Entry
“Sideline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sideline. Accessed 9 Jul. 2025.
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