frontalan

1. head-on; frontal
   Na autoputu se dogodio frontalni sudar dva automobila. — Two cars collided head-on on the motorway.
   Vojska je krenula u frontalni napad. — The army launched a frontal attack.
2. (figurative) all-out; open; direct
   Vlada najavljuje frontalnu borbu protiv korupcije. — The government is announcing an all-out fight against corruption.
3. (in schools) whole-class; lecture-style
   Frontalna nastava i dalje preovladava u našim školama. — Whole-class teaching still dominates in our schools.

Usually used in the definite form: frontalni sudar, frontalni napad.