The state of being ungrateful; lack of gratitude.

अनुग्रह का अभाव

English Usage: His unthankfulness was evident during the meeting when he failed to acknowledge her contributions.

Hindi Usage: उसकी अनुग्रह का अभाव बैठक के दौरान स्पष्ट था जब उसने उसकी योगदान को स्वीकार नहीं किया।