noun, noun or participle which takes 'suru'
deep disappointment and discouragement
A yojijukugo combining 失望 (disappointment) and 落胆 (discouragement), expressing a state of being thoroughly let down and disheartened. Often used in formal or written contexts.
試験の結果に失望落胆した。
I was deeply disappointed and disheartened by the exam results.
His betrayal brought deep disappointment and discouragement to the whole team.