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yo

1 American  
[yoh] / yoʊ /

interjection

  1. (used as an exclamation to get someone's attention, express excitement, greet someone, etc.)

  2. here; present: used especially in answer to a roll call.


y.o. 2 American  

abbreviation

  1. year old; years old.


yo British  
/ jəʊ /
  1. an expression used as a greeting, to attract someone's attention, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What is a basic definition of yo? Yo is an interjection that is used for getting someone’s attention, greeting someone, or expressing strong feelings. Yo is also used to mean “here” or “present,” as in response to a roll call.Yo is a very flexible interjection that is used similarly to hey. The specific meaning of yo depends on the context it is used in. Yo is most often used informally and wouldn’t be used in formal writing that isn’t quotes or dialogue.

  • Real-life examples: You might greet a pal with a friendly “Yo!” Or you might try to get the attention of a distracted driver with an angry “Yo!”
  • Used in a sentence: Yo, Teddy! How is it going? 
Yo is also used to mean “here” or “present,” especially in response to someone calling your name.
  • Real-life examples: It might be too casual to say yo when your teacher reads your name during roll call, but your basketball coach probably won’t mind. And when someone asks who in a group wants pizza, you can definitely raise your hand and say “Yo!” to mean that you do.

Etymology

Origin of yo

late Middle English word dating back to 1375–1425

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.

Parade photos of Kim Yo Jong, the dictator’s powerful younger sister, weren’t prominent.

From The Wall Street Journal

I want people to talk about comedy like, “Yo, Ali Siddiq is out of Houston, TX!”

From Los Angeles Times

His last text to Forté reads: “Yo, text me, so I know you okay?”

From Los Angeles Times

Kim Yo Jong, the younger sister of Kim Jong Un, has emerged as one of the most powerful figures in North Korea, playing a leading role in the nation's diplomatic efforts and nuclear posturing.

From Barron's

Long seen as one of her brother's most trusted lieutenants, Kim Yo Jong has now been elevated to a key position in the nation's ruling party.

From Barron's