Adverb:

बेगरजी से, बेलाग होकर, निष्‍पक्षतापूर्वक, निरीहता से, नि:स्‍पृहता से,

disinterestedly's Usage Examples:

It is only necessary for one powerful nation like Russia--barbaric as she is said to be--to place herself disinterestedly at the head of an alliance having for its object the maintenance of the balance of power of Europe, and it would save the world!

Davis rolled sluggishly with the sway of his mule, staring disinterestedly at the mule in front of him.

By the approach of skilled pathologists to the clinical wards, a link is forged between practitioners and the men of science who pursue pathology disinterestedly.