Bye! / Hi!
'Ciao' — CHAO. One syllable — the 'ci' sounds like 'ch', the 'ao' is a diphthong. Don't say 'cee-ao' as two separate syllables.
Use with friends, family, colleagues you know well, and anyone of similar or younger age who you're on familiar terms with. Never with strangers, elders, or in formal situations.
'Ciao' is one of the most recognised Italian words globally. It comes from the Venetian dialect 'sciàvo' (your servant). It functions as both hello and goodbye — context makes the meaning clear. It's warm, affectionate, and informal.
Ciao ciao!
Bye bye!
Doubled for extra warmth — signals fond departure. Very common in Italian.
Ciao a tutti!
Bye everyone!
Used when leaving a group — addresses everyone simultaneously
Ciaooo!
Byeee! (extended)
Extended vowel in speech or text — adds cheerfulness or affection. Very colloquial.
'Ciao' is now used globally but Italians are aware it sounds informal. Using 'ciao' with someone significantly older or in a professional context can seem disrespectful — always gauge the relationship first. In the south of Italy, 'ciao' between elders is still uncommon.