disappointment
US /ˌdɪs.əˈpɔɪnt.mənt/
UK /ˌdɪs.əˈpɔɪnt.mənt/

1.
decepción
sadness or displeasure caused by the nonfulfillment of one's hopes or expectations
:
•
His failure to win the championship was a great disappointment to his fans.
Su fracaso en ganar el campeonato fue una gran decepción para sus fans.
•
She couldn't hide her disappointment when she heard the news.
No pudo ocultar su decepción cuando escuchó la noticia.