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.
Optimism is the opposite of pessimism.   Optimism is the outlook that everything is going to be o.k., in spite of adverse conditions. If you are disappointed in the recent elections, but believe that we will be o.k., then you are an optimist. 22 people found this useful.