disappointment

noun
B2+
1
B2+
the feeling of being sad because something has not happened or been as good, successful, etc. as you expected or hoped
ناامیدی, ناکامی, افسوس, دلسردی
2
B2+
a person or thing that is disappointing
مایوس کننده, سرخوردگی
a bitter/major disappointment
That new restaurant was a big disappointment.
He's suffered a whole string of disappointments this week.
I always felt I was a disappointment to my father.