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Definitions

sideline

[sahyd-lahyn] / ˈsaɪdˌlaɪn /
NOUN
secondary occupation
Synonyms
STRONG
distraction diversion hobby moonlighting recreation subsidiary
WEAK
leisure activity leisure pursuit second job side job side project
Antonyms
STRONG
profession vocation work

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He is not a demonstrative individual, in news conferences or on the sideline.

From BBC • May 3, 2026

Collins came dressed as George Washington, a sideline that he started at Fourth of July celebrations at his church 25 years ago and has continued to this day.

From Slate • Apr. 28, 2026

Doncic went to Spain to receive specialized treatment with hopes of speeding up his recovery and rejoined the team on the sideline last Saturday in time for Game 1.

From Los Angeles Times • Apr. 24, 2026

The 6-foot-6 Matarazzo cut an imposing figure on the sideline, and his players bought into his high-energy style immediately.

From The Wall Street Journal • Apr. 18, 2026

I knelt down on that sideline, took off my sports goggles, and started to cry.

From "Tangerine" by Edward Bloor