beznadan

1. hopeless
   Situacija nije beznadna, još možemo nešto da uradimo. — The situation isn't hopeless, we can still do something.
   Posle svađe je imao beznadan pogled. — After the argument he had a hopeless look.
2. humor. (of a person) hopeless; incorrigible
   Ti si beznadan slučaj, opet si zaboravio ključeve! — You're a hopeless case, you forgot your keys again!

The variant beznadežan is more common.