uroniti

1. (+ acc., u + acc.) to immerse; to dip; to plunge
   Uronila je ruke u toplu vodu. — She plunged her hands into the warm water.
2. (intransitive) to dive; to submerge
   Ronilac je uronio i nestao ispod talasa. — The diver submerged and disappeared beneath the waves.
3. (u + acc.) to immerse oneself; to become absorbed
   Uronio je u knjigu i zaboravio na večeru. — He got absorbed in the book and forgot about dinner.
   Grad je uronio u tamu posle nestanka struje. — The city was plunged into darkness after the power cut.

Used with u + accusative: uroniti u vodu, u misli.