yo

1 of 2

interjection

ˈyō

Synonyms of yo next

next

—used especially to call attention, to indicate attentiveness, or to express affirmation

YO

2 of 2

abbreviation

year old; years old

Word History

Etymology

Interjection

Middle English yo, io, interjection

First Known Use

Interjection

15th century, in the meaning defined above

Time Traveler

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

See more words from the same century

Browse Nearby Words

-yne

yo

YO

See all Nearby Words

Cite this Entry

Style

“Yo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/yo. Accessed 10 Nov. 2025.

Copy Citation

Last Updated: 4 Nov 2025 - Definition revised

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