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yo

1 of 2

interjection

Synonyms of yonext
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

Browse Nearby Words

Cite this Entry

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

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