To gradually become less visible or noticeable.

To gradually lose strength or intensity.

धीरे-धीरे ताकत या तीव्रता खोना।

English Usage: The music started to fade down as the evening approached.

Hindi Usage: जैसे-जैसे शाम निकली, संगीत धीरे-धीरे कम होने लगा।