an unnecessary or unproductive activity

व्यर्थ गतिविधि

English Usage: Talking to him was a waste of time.

Hindi Usage: उससे बात करना समय की बर्बादी थी।

to use something carelessly or to not use something in the best possible way

to cause something to be wasted

बर्बाद करना

English Usage: He wasted his talents on trivial pursuits.

Hindi Usage: उसने अपनी प्रतिभाएँ तुच्छ गतिविधियों पर बर्बाद कीं।

to spend or use something carelessly