Definition of MODAL. 1. : of or relating to modality in logic. 2. : containing provisions as to the mode of procedure or the manner of taking effect âused of a contract or legacy. 3. : of or relating to a musical mode. 4. : of or relating to structure as opposed to substance. 5.
Pessimism is a temperamental trait, whereas depression is a clinical disease. In some instances, both pessimism and depression might be present, and it might be possible that a consistently negative attitude could lead to depression.
the tendency to see, anticipate, or emphasize only bad or undesirable outcomes, results, conditions, problems, etc.: His pessimism about the future of our country depresses me. 2. the doctrine that the existing world is the worst of all possible worlds, or that all things naturally tend to evil. 3. the belief that the evil and pain in the world are not compensated for by goodness and happiness.