a feeling of disappointment resulting from the discovery that something is not as good as one believed it to be

the state of being disenchanted or disappointed

मोहभंग

English Usage: After years of work, her disillusionment with the project was palpable.

Hindi Usage: वर्षों के काम के बाद, परियोजना के प्रति उसका मोहभंग स्पष्ट था।