Definition of "moodiness" [mood•i•ness]

• The property of being moody. (noun)

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• "Although his Twilight saga work requires a certain moodiness, Lautner proved he has enthusiasm to spare in his guest spot as SNL host last year."
• "In other cases we meet with moodiness, which is not sad but irritable and angry, and consequently differs from the regular irritability of the epileptic; it frequently leads to most violent attacks upon those about them."
• "Lydgate, relieved from anxiety about her, relapsed into what she inwardly called his moodiness -- a name which to her covered his thoughtful preoccupation with other subjects than herself, as well as that uneasy look of the brow and distaste for all ordinary things as if they were mixed with bitter herbs, which really made a sort of weather-glass to his vexation and foreboding."