Definition of dejection noun from the Oxford Advanced Learner's Dictionary

 

dejection

 noun
noun
BrE BrE//dɪˈdʒekʃn//
 
; NAmE NAmE//dɪˈdʒekʃn//
 
[uncountable] Unhappiness
 
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a feeling of unhappiness and disappointment She sat in the corner in utter dejection. See related entries: Unhappiness Word Origin late Middle English: from Latin dejectio(n-), from deicere ‘throw down’, from de- ‘down’ + jacere ‘to throw’.
See the Oxford Advanced American Dictionary entry: dejection