Not sufficient or of a quality that is not good enough.

Lacking the quality or quantity required; insufficient.

गुणों या मात्रा में कमी होना

English Usage: The service was inadequate to meet the needs of the customers.

Hindi Usage: सेवा ग्राहक की आवश्यकताओं को पूरा करने के लिए अपर्याप्त थी।