Main Page | See live article | Alphabetical index A person's mood is the repertoire of emotions and thoughts experienced at a particular time. In normal functioning, moods are largely adaptive to external events. An optimist and a pessimist evaluate a situation relatively favorably and unfavorably, respectively. This applies also to expectations. The optimist looks at the world "through rose-tinted spectacles". Mood disorders are mental illnesses where the normal functioning of mood is disrupted. See also: Grammatical mood This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.