Mr Kapil Sharma is of an agile mind.
Agile-जल्दी से very easily/ quickly

The old man was helpless and feeble.
Feeble- बहुत कमजोर weak/without energy

That girl has dishevelled hair.
Dishevelled-मलीन untidy/shabby

Don't touch me with your grubby hands.
Grubby- गंदा dirty

The time has come to protect those unkempt children.
Unkempt- जिस पर ध्यान न दिया गया हो not looked after.

I saw a cute bonny baby today.
Bonny- स्वस्थ/ सुन्दर ;good looking/ healthy (बच्चे को संदर्भित करता है)

I saw him after 2 months he looked terribly scrawny.
Scrawny- सूखा/ दुबला पतला very thin