Moody

Part of speech: adjective (a.)

1. Subject to varying moods, especially to states of mind which are unamiable or depressed.

2. Hence: Out of humor; peevish; angry; fretful; also, abstracted and pensive; sad; gloomy; melancholy. "Every peevish, moody malcontent." Rowe. Arouse thee from thy moody dream! Sir W. Scott.

Synonyms: Gloomy; pensive; sad; fretful; capricious.