sporazumeti

1. (sporazumeti se) to come to an agreement; to come to terms
   Na kraju smo se sporazumeli oko cene. — In the end we agreed on the price.
   Dve strane su se sporazumele o saradnji. — The two sides came to an agreement on cooperation.
2. (sporazumeti se) to make oneself understood; to understand each other
   Sporazumeli smo se rukama i nogama. — We made ourselves understood with gestures.
   Sa njim sam se sporazumeo na engleskom. — I managed to communicate with him in English.

Almost always with se: sporazumeti se s kim o čemu / oko čega.