unnecessary; not needed

अनावश्यक

English Usage: It was a needless expense to buy a new car when the old one was still working fine.

Hindi Usage: नई कार खरीदना अनावश्यक खर्च था जब पुरानी कार अभी भी ठीक चल रही थी।

a situation or event that is unnecessary

अनावश्यकता

English Usage: The needless of the situation was baffling to everyone involved.

Hindi Usage: स्थिति की अनावश्यकता सभी शामिल लोगों के लिए चौंका देने वाली थी।