yo

The word “yo” means used as a casual greeting, similar to "hi" or "hey.". In plain terms, a very informal way to say hi, to call out to someone, or to answer "here" — with a newer, less common use as a gender-neutral pronoun.

“Yo” is pronounced yoh (/joʊ/ in IPA).

Here is “yo” used in a sentence: “"Yo, what's up?" he said as he walked in.”

Words with a similar meaning to “yo” include hi and hey.

Depending on how it is used, “yo” can be an intj and a pronoun.

The word “yo” dates back to around 1900 and comes from Old English. Traced back to Middle English variants of "yea"/"yes," ultimately from Old English "gea." Its modern casual-greeting sense took off in early-20th-century Philadelphia and spread worldwide through pop culture.

“Yo” is a fairly common word in modern English.

“Yo” has 3 distinct senses listed in this dictionary. The most common is: used as a casual greeting, similar to "hi" or "hey.".

Not usually. Yo is very informal and casual rather than rude, common in friendly speech, especially among younger people and in urban American English. It can sound too relaxed or overly familiar in formal settings or with people you don't know, but among friends it is simply a laid-back greeting.

Yo is an old English exclamation used for centuries to call attention or hail someone, appearing as far back as the medieval period. Its modern greeting use was popularised in twentieth-century American culture, particularly through Philadelphia speech, hip-hop, and film, which spread it into everyday informal conversation worldwide.

Both are casual ways to greet someone or get their attention. Hey is widely acceptable in most relaxed settings. Yo is more informal and street-style, carrying a slightly cooler, more urban tone. They are largely interchangeable among friends, though yo sounds more out of place in polite situations.

No. Yo belongs to casual speech and informal messaging between friends. In formal writing, emails, or professional communication, it comes across as far too relaxed, and a greeting like 'Hello' or 'Dear' is expected instead. Save yo for texts, chats, and conversations where a friendly, offhand tone is welcome.