konkretno

1. specifically; concretely
   Šta konkretno želiš da uradim? — What specifically do you want me to do?
   Nije konkretno rekao kada dolazi. — He didn't say specifically when he's coming.
2. (introducing a detail) namely; in particular; to be specific
   Imam problem sa kolima, konkretno sa kočnicama. — I have a problem with the car, the brakes to be specific.