To sadden or displease (someone) by underperforming, or by not delivering something promised or hoped for.
To deprive (someone of something expected or hoped for).
To fail to meet (an expectation); to fail to fulfil (a hope).
To show (an opinion, belief, etc.) to be mistaken.
To prevent (something planned or attempted).
Defeated of expectations or hope; experiencing disappointment; let down.
Expressing or indicating disappointment.