What does On sale mean in Greek?

There isn't a direct, single-word translation for "on sale" in Greek. You'd need to use a phrase depending on the context. Here are some options:

General:

* Σε προσφορά: (Se prosfora) - This is the most common and direct translation, meaning "on offer."

* Στην έκπτωση: (Stin ekptosi) - This means "at a discount."

* Μειωμένη τιμή: (Miewmeni timi) - This means "reduced price."

More specific:

* Σε προσωρινή προσφορά: (Se prosorini prosfora) - This translates to "on a temporary offer."

* Σε έκπτωση: (Se ekptosi) - This is a more specific version of "at a discount."

Example:

* "This item is on sale for 50% off."

* Αυτό το προϊόν είναι σε προσφορά με 50% έκπτωση. (Aftó to proion eínai se prosfora me 50% ekptosi.)

The best translation will depend on the specific context and the nuance you want to convey.