Mood (psychology), a relatively long lasting emotional state
Grammatical mood, one of a set of morphologically distinctive forms that are used to signal modality
Mood (literature), the affective setting of a piece of literature
Robert Mood (born 1958), a Norwegian general
The Mood, a British pop band from 1981 to 1984
Mood (band), hip hop artists
Moods (Barbara Mandrell album), 1978
Moods (Mal Waldron album), 1978
Moods (Neil Diamond album), 1972
Moods (The Three Sounds album), 1960
Moods (Monday Michiru album), 2003
The Mood (EP), a 2013 EP by F.T. Island
Mood is distinct from grammatical tense or grammatical aspect, although the same word patterns are used for expressing more than one of these meanings at the same time in many languages, including English and most other modern Indo-European languages. (See tenseaspectmood for a discussion of this.)
Some examples of moods are indicative, interrogatory, imperative, subjunctive, injunctive, optative, and potential. These are all finite forms of the verb. Infinitives, gerunds, and participles, which are non-finite forms of the verb, are not considered to be examples of moods.
Some Uralic Samoyedic languages have more than ten moods; Nenets has as many as sixteen. The original Indo-European inventory of moods consisted of indicative, subjunctive, optative, and imperative. Not every Indo-European language has all of these moods, but the most conservative ones such as Avestan, Ancient Greek, and Sanskrit have them all. English has indicative, imperative, and subjunctive moods; other moods, such as the conditional, do not appear as morphologically distinct forms.
Not all of the moods listed below are clearly conceptually distinct. Individual terminology varies from language to language, and the coverage of (e.g.) the "conditional" mood in one language may largely overlap with that of the "hypothetical" or "potential" mood in another. Even when two different moods exist in the same language, their respective usages may blur, or may be defined by syntactic rather than semantic criteria. For example, the subjunctive and optative moods in Ancient Greek alternate syntactically in many subordinate clauses, depending on the tense of the main verb. The usage of the indicative, subjunctive, and jussive moods in Classical Arabic is almost completely controlled by syntactic context. The only possible alternation in the same context is between indicative and jussive following the negative particle l.
Realis moods are a category of grammatical moods that indicate that something is actually the case or actually not the case. The most common realis mood is the indicative mood. Some languages have a distinct generic mood for expressing general truths. For other realis moods, see the main Realis mood article.