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yo

1 of 2

interjection

ˈyō

Synonyms of yo next

next

—used especially to call attentionto indicate attentivenessor to express affirmation

YO

2 of 2

abbreviation

year old; years old

Word History

Etymology

Interjection

Middle English yoiointerjection

First Known Use

Interjection

15th centuryin the meaning defined above

Time Traveler

The first known use of yo was in the 15th century

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YO

yo

YOB

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Cite this Entry

Style

“Yo.” Merriam-Webster.com DictionaryMerriam-Websterhttps://www.merriam-webster.com/dictionary/yo. Accessed 14 Feb. 2026.

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