Meaning : An act that makes a previous act of no effect (as if not done).
Meaning : Loosening the ties that fasten something.
Example :
The tying of bow ties is an art; the untying is easy.
Synonyms : unfastening, untying
Undoing ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Undoing ka matlab kya hota hai?