potapati

1. to dip; to soak
   Dete potapa keks u mleko. — The child is dipping a biscuit in milk.
   Pasulj uvek potapam preko noći. — I always soak the beans overnight.
2. (of a ship) to sink
   Podmornice su potapale brodove sa zalihama. — Submarines were sinking supply ships.
3. (with se) to sink; to go under
   Čamac se polako potapao. — The boat was slowly sinking.
4. (of water, a river) to flood
   Reka svakog proleća potapa okolna polja. — Every spring the river floods the surrounding fields.

The perfective is potopiti.