To render someone unable to move or act.

किसी को गतिहीन या निष्क्रिय करना

English Usage: The injury was incapacitating, leaving him unable to walk.

Hindi Usage: चोट इतनी गंभीर थी कि वह चल नहीं पा रहा था.

The state of being unable to perform a function or duty.

असमर्थता

English Usage: His incapacity to make decisions was evident during the crisis.

Hindi Usage: संकट के दौरान उसकी असमर्थता निर्णय लेने में स्पष्ट थी.