Explanation

The is LEAST interested in this project. 

اس منصوبے میں سب سے کم دلچسپی ہے۔

"Least" is the superlative form of "little" or "less."

This form of the adjective is used to indicate the highest degree among three or more things and typically ends in "-est" or uses "most" before the adjective (e.g., "most interested" or "least interested").