uman

1. (of a person) wise; intelligent
   Njen deda je bio veoma uman čovek. — Her grandfather was a very wise man.
   To je bio uman potez s tvoje strane. — That was a smart move on your part.
2. mental; intellectual
   Umni rad može da bude jednako naporan kao fizički. — Mental work can be just as tiring as physical work.
   Ova igra razvija umne sposobnosti dece. — This game develops children's mental abilities.

In the sense "mental" the long form umni is usually used.