uobraziti

1. to imagine; to get it into one's head
   Verovatno sam sve uobrazio, niko nije zvonio. — I probably imagined it all, nobody rang.
   Uobrazila je da je svi ogovaraju. — She got it into her head that everyone was gossiping about her.
2. (uobraziti se) to become conceited; to get cocky
   Nemoj da se uobraziš posle jedne pobede. — Don't get cocky after one win.
   Otkad je dobio unapređenje, malo se uobrazio. — Since he got promoted, he's become a bit full of himself.

In the sense "to imagine" it often takes sebi and a da-clause: uobraziti sebi da…