To be deeply engrossed or absorbed; to be lost in one's own thoughts or imagination.
अपनी ही दुनिया में खोए हुए होना
English Usage: She didn't hear the bell because she was in a world of her own.
Hindi Usage: उसने घंटी नहीं सुनी क्योंकि वह अपनी ही दुनिया में खोई हुई थी।
apne khayalon mein khona, apne khyalaon mein khona, apne khyalon mein kho jana, apne khayal mein khona, apne khayalon mein kho jaana, apne khayal mein kho jaana, apne khyalon mein khona, apne khayal mein khoana, apne khyalo mein khona