Open English Wordnet
Nouns
(n)depressiona mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity
(n)depression, slump, economic crisisa long-term economic state characterized by unemployment and low prices and low levels of trade and investment
(n)low, depressionan air mass of lower pressure; often brings precipitation“a low moved in over night bringing sleet and snow”
(n)depressive disorder, clinical depression, depressiona state of depression and anhedonia so severe as to require clinical intervention
(n)depression, impression, imprinta concavity in a surface produced by pressing“he left the impression of his fingers in the soft mud”