say it: dis-uh-POYN-tid
disappointed is an adjective meaning "disappointingly unsuccessful". It carries one recorded sense.
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”
Definitions, synonyms and semantic relations for disappointed come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.