disappointed at

disappointed at (someone or something)

Disheartened or upset by someone or something. I know that my parents are very disappointed at my report card this semester.
See also: disappointed

disappointed at someone or something

 and disappointed in someone or something
becoming sad because of someone or something. I am really disappointed at what you did. I am very disappointed in you. That was a terrible thing to do. They were disappointed in the outcome.
See also: disappointed
References in classic literature ?
returning to his letter, she was disappointed at the outset.
All hailed Don Quixote as victor, but the greater number were vexed and disappointed at finding that the combatants they had been so anxiously waiting for had not battered one another to pieces, just as the boys are disappointed when the man they are waiting to see hanged does not come out, because the prosecution or the court has pardoned him.
I am both surprised and disappointed at the severity of the punishment.
A LEADING Coventry city councillor has said he is disappointed at the number of retailers still selling knives and aerosols to underage children.
I was shocked and disappointed at the sheer ignorance of your blanket accusation, "The charter school movement has opened secondary education doors to many groups of people--some looking to make money, others intending to bring religion or varying philosophies into schools .
I am not disappointed at all at not winning,'' said Harrington.
SKY BLUES chairman Bryan Richardson is disappointed at losing Youssef Chippo and Youssef Safri so early when the African Nations Cup does not start for a fortnight.