moodiness

/ˈmuːdɪnəs/

词干

后缀

-ness: Appended in general, often informally, stylistically, or jocularly, for reification of an attribute. · Appended to adjectives to form nouns meaning "the state of being (the adjective)", "the quality of being (the adjective)", or "the measure of being (the adjective)".

Either inherited from Middle English modinesse (“pride”), from Old English mōdiġnes, or formed anew from moody +‎ -ness.