Verb

• S: (v) disappoint, let down (fail to meet the hopes or expectations of) "Her boyfriend let her down when he did not propose marriage"

Adjective

• S: (adj) defeated, disappointed, discomfited, foiled, frustrated, thwarted (disappointingly unsuccessful) "disappointed expectations and thwarted ambitions"; "their foiled attempt to capture Calais"; "many frustrated poets end as pipe-smoking teachers"; "his best efforts were thwarted"