the quality or state of being unreliable or lacking in dependability.

अनिश्चितता

English Usage: His undependability made it difficult for the team to trust him with important tasks.

Hindi Usage: उसकी अनिश्चितता ने टीम के लिए महत्वपूर्ण कार्यों में उस पर भरोसा करना मुश्किल बना दिया।