1. ಮೋಹಿತ (mohita): This word signifies being captivated or enchanted by someone, implying a state of being deeply attracted and influenced.
2. ಪ್ರೀತಿಯಲ್ಲಿ ಮುಳುಗಿದ (preetiyalli mulugida): This literally translates to "drowned in love," emphasizing the consuming nature of the emotion.
3. ಸ್ನೇಹಿತನಿಗೆ ಅಪ್ಪಿತನ (snehithanaige appitana): This expression means "surrendering to a friend," implying a complete and willing submission to the beloved.
4. ಮನಸ್ಸು ಮೋಡಿ ಮಾಡಿದ (manas-su moadi maadida): This translates to "having one's mind enchanted," indicating a complete mental captivation.
You can use these words depending on the specific nuance you want to convey.
Ultimately, the closest equivalent to "totally lost in love" in Kannada would be to combine several of these words or create a descriptive phrase that conveys the feeling of complete immersion and surrender to love.