What does ciao mean?
Ciao is an Italian loanword functioning in English as both a greeting and a farewell, making it unusual among salutations for serving two opposite purposes. Borrowed into English in the twentieth century, it retains the informal, breezy register of its source language and often lends speech a cosmopolitan or playful flavor. Speakers might use it to greet a friend ('Ciao! Come on in') or to sign off a message ('Ciao for now'). As a noun, it can denote the utterance itself, as in 'she gave me a quick ciao'. The word has a remarkable history: it derives from the Venetian phrase s-ciavo vostro, meaning 'your slave' — a humble expression of deference spoken to respected acquaintances, rooted in the same Latin word that gave English 'slave'. Over centuries this elaborate pledge of servitude was worn down by everyday use into a single crisp syllable. Today ciao is recognized far beyond Italy, appearing in languages worldwide, and its blend of friendliness and continental style keeps it popular in casual conversation, advertising, and brand names.
An Italian greeting or farewell adopted into English, used both when meeting and when parting.
"Ciao! It's been ages since we last met."
Informal in register; whether it functions as a hello or a goodbye depends entirely on context.
An instance or utterance of the word 'ciao'; a casual greeting or farewell.
"He acknowledged me with a cheerful ciao as he cycled past."
Usually treated as singular, though it can be pluralized informally as ciaos.
Rarely used; 'ciao' is most often treated as an invariant interjection even in noun form.
"The room filled with warm ciaos as the guests arrived."
Ciao literally began as a declaration of servitude: it descends from an Italian phrase meaning "I am your slave," a humble greeting that became one of the world's most casual goodbyes.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ciao come from?
Ciao comes from the Venetian dialect phrase s-ciavo vostro, literally '(I am) your slave', a polite formula of deference used when greeting or taking leave of someone. The word ultimately traces back to Medieval Latin sclavus ('slave'), the same source that produced the English word 'slave'. Over time the phrase was shortened from s-ciavo to ciao and lost its literal meaning of servitude, becoming a neutral, friendly salutation. It entered general Italian usage and was borrowed into English during the twentieth century, spreading internationally after the mid-century popularity of Italian culture and film.
How ciao is actually used
Borrowed directly from Italian, where it is informal; in English it carries a cosmopolitan, relaxed, slightly fashionable tone. It works equally as hello and goodbye, so context determines which meaning applies.
Easily confused with ciao
"Chow" is a slang word for food (or a dog breed), whereas "ciao" is a greeting or farewell — though "chow" is sometimes mistakenly written in its place because the words look and sound similar.