beskrajno

1. endlessly
   Predavanje je trajalo beskrajno dugo. — The lecture went on endlessly.
   On beskrajno priča o svom autu. — He talks endlessly about his car.
2. (with adjectives, verbs) infinitely; immensely
   Beskrajno sam ti zahvalna na pomoći. — I'm immensely grateful to you for your help.
   Bio je beskrajno srećan tog dana. — He was infinitely happy that day.