: Literally "a hundred of these days," used to wish someone many more years of life and happiness.
To sound like a native, focus on the melodic cadence of these phrases: tanti_auguri_di_buon_compleanno
: The standard "Happy Birthday." It is widely used but can sometimes feel a bit "textbook". Auguri di cuore! : "Heartfelt wishes". : Literally "a hundred of these days," used
Depending on the level of formality and your relationship with the person, you can use these expressions: tanti_auguri_di_buon_compleanno
How to Say Happy Birthday in Italian (Buon Compleanno Guide)