HinKhoj Dictionary

Engross: Devote (oneself) fully to (तल्लीन कर लेना)
He engrosses himself fully in his work.
Fruitless: Unproductive of success (निरर्थक)
He indulged in a fruitless search for the important documents related to his work.
Inert: Unable to move or resist motion (गतिहीन)
A stone is an inert object.
Lackluster: Lacking luster or shine (फीका)
The small girl was staring with lackluster eyes.
Sanctuary: A shelter from danger or hardship (शरण स्थान/ पशुविहार)
There is a beautiful bird sanctuary on the outskirts of the city.