Questions & Answers about Minä haluan tilata kahvia.
Why is it kahvia and not kahvi?
Kahvi is the basic dictionary form (nominative singular).
Kahvia is the partitive singular form.
In this sentence, kahvia is used because:
- you’re talking about an unspecified amount of coffee (some coffee, not one whole, countable “coffee”), and
- in Finnish, many verbs that involve consuming or getting something (juoda “drink”, ostaa “buy”, tilata “order”) normally take the object in the partitive when the amount is not fixed.
So tilata kahvia is naturally understood as “to order (some) coffee”, not a specific, clearly defined unit of coffee.
Could I say kahvin instead of kahvia, and what would be the difference?