to make or become less intense or lively

कमज़ोर करना

English Usage: The sound dulled as the car moved further away.

Hindi Usage: जब कार दूर गई, तो आवाज़ कमज़ोर हो गई।

lacking brightness or clarity

धुंधला

English Usage: The colors in the painting had dulled over time.

Hindi Usage: पेंटिंग में रंग समय के साथ धुंधले हो गए थे।