causing disappointment; not meeting expectations

निराशाजनक

English Usage: The movie was disappointing; I expected it to be much better.

Hindi Usage: फिल्म निराशाजनक थी; मैंने सोचा था कि यह कहीं बेहतर होगी।

to fail to fulfill someone's expectations

निराश करना

English Usage: She always disappoints her friends by canceling plans at the last minute.

Hindi Usage: वह हमेशा अपने दोस्तों को आखिरी मिनट पर योजनाएं रद्द करके निराश करती है।

the feeling of sadness or displeasure caused by the non-fulfillment of one's hopes or expectations

निराशा

English Usage: The team's failure to win the championship was a great disappointment to their fans.

Hindi Usage: टीम की चैम्पियनशिप जीतने में असफलता उनके प्रशंसकों के लिए एक बड़ी निराशा थी।