adverb, noun or participle which takes 'suru'
dejectedly; dispiritedly; gloomily
Describes a person's downcast, crestfallen state, often after disappointment or scolding. Can be used adverbially or with する to mean 'to become dejected'.
叱られて、彼はしゅんとしてしまった。
He became dejected after being scolded.
試合に負けて、選手たちはしゅんとしていた。
The players were downcast after losing the match.