podvrgnuti

1. (sb/sth + dat.) to subject
   Uzorke su podvrgli detaljnoj analizi. — The samples were subjected to detailed analysis.
   Njegov predlog su podvrgli oštroj kritici. — His proposal was subjected to harsh criticism.
2. (podvrgnuti se + dat.) to undergo
   Morao je da se podvrgne operaciji kolena. — He had to undergo knee surgery.
   Svi kandidati su se podvrgli testiranju. — All the candidates underwent testing.
3. formal to subjugate
   Carstvo je podvrglo susedne narode svojoj vlasti. — The empire subjugated the neighbouring peoples.

The imperfective is podvrgavati; the thing one is subjected to is in the dative.