Learn Italian: Puoi riordinare questo cassetto per favore?

The prefix ri- usually indicates doing something again. So literally, riordinare is to put things in order again. In the context of a room or a drawer, it means restoring it to its original, orderly state, which is why we translate it as tidying up.

Could riordinare also mean to reorder something, like buying a product again?

Yes! Because ordinare can mean to order a product or meal, riordinare can absolutely mean to reorder or to place another order. You just have to rely on context. Here, you wouldn't buy a drawer again, so tidying up is the clear meaning.

How is riordinare different from sistemare, which is also commonly used for tidying up?

They are often used interchangeably, but riordinare specifically implies putting things back into a structured, logical sequence (focusing on the root ordine). Sistemare is a bit broader and can just mean fixing a mess or finding an appropriate place for items.

Does the noun cassetto have a morphological derivation as well?

Yes, it is derived from cassa, which means a box, chest, or crate. By adding the diminutive suffix -etto (meaning small), we get cassetto. So a drawer is literally just a small box!