Hello [or Goodbye] to everyone is an English equivalent of 'Ciao a tutti'. The interjection 'ciao' means 'hello, goodbye, bye'. The preposition 'a' means 'to'. The masculine noun 'tutti' means 'everyone, everybody, all'. All together, they're pronounced 'chow a TOOT-tee'.
"Tutti".
Così fan tutti! in Italian means "All men do it!" or "Thus do they all!" in English.
ciao a tutti
Mi piace! Grazie a tutti! in Italian means "I like (it)! Thanks to everybody!" in English.
"I miss you all!" in English is Manco tutti voi! in Italian.
Vi uccidero` tutti.
Buona notte a tutti
You say "lo sanno tutti"
"Everyone welcome to the table!" in English is Benvenuti tutti a tavola! in Italian.
"Family at all costs!" in English is Famiglia a tutti i costi! in Italian.
"To everybody" and "to everything" are English equivalents of the Italian phrase a tutti. The preposition and masculine plural noun also translate into English as "to all" or "to everyone" according to context. The pronunciation will be "a TOOT-tee" in Italian.
"Good morning, everyone!" in English means Buon giorno a tutti! in Italian.