ravnodušnost

1. indifference; apathy
   Najviše me boli njegova ravnodušnost. — What hurts me most is his indifference.
   Ravnodušnost ljudi prema politici je sve veća. — People's apathy toward politics keeps growing.
2. composure; equanimity
   Slušao je pretnje s potpunom ravnodušnošću. — He listened to the threats with complete composure.

Usually used with prema + dative: ravnodušnost prema politici.