verb

• (transitive) To sadden or displease (someone) by underperforming, or by not delivering something promised or hoped for.
• (transitive) To deprive (someone of something expected or hoped for).
• (transitive, dated) To fail to meet (an expectation); to fail to fulfil (a hope).
• (transitive, dated) To show (an opinion, belief, etc.) to be mistaken.
• (transitive, obsolete) To prevent (something planned or attempted).