Formal:
* کار عالی (kaar aali): This is the most common and formal way to say "excellent work." It literally translates to "excellent work."
* کار فوقالعاده (kaar foq-ol-adeh): This means "extraordinary work" and is even more formal than "kaar aali."
* کار بسیار خوب (kaar besyaar khoob): This means "very good work" and is a more general way to praise someone's work.
Informal:
* عالی بود (aali bud): This means "it was excellent" and is a more informal way to say "excellent work."
* خیلی خوب بود (kheyli khoob bud): This means "it was very good" and is another informal way to say "excellent work."
* دمت گرم (demet garm): This is a very informal way to say "good job" or "well done" and is often used in a friendly or playful way.
The best way to choose which phrase to use will depend on the situation and your relationship with the person you are talking to.