Not having been fulfilled or achieved.

Not satisfied or content with something.

असंतुष्ट

English Usage: He felt unfulfilled in his current position at the company.

Hindi Usage: उसे अपने वर्तमान पद पर असंतुष्ट महसूस हुआ।

The state of not being fulfilled or completed.

अपूर्णता

English Usage: The unfulfillment of his dreams led to disappointment.

Hindi Usage: उसके सपनों की अपूर्णता ने निराशा पैदा की।