in a state of rotting or decomposition

सड़न की अवस्था में

English Usage: The decayed fruit had a foul smell.

Hindi Usage: सड़े हुए फल में एक बदबू थी।

to undergo the process of becoming rotten or decomposed

सड़ना

English Usage: The building has decayed over the years.

Hindi Usage: वर्षो में इमारत सड़ गई है।