Emily Dickinson Lexicon

MOOD, n.² [Goth. mod, anger; Sax. mod, Sw. mod, the mind, a lofty mind, pride, violence; modig, proud, spirited; G. muth, mind, mood, courage, mettle, spirit; D. moed; Dan. mood, mod, heart, courage, mettfe. We observe these words unite the sense of mind with that of spirit, courage, anger, for the primary sense is derived from moving, driving or rushing forward, or from exciting. We observe analogous cases in the L. animus and Gr. θυμος. Class Md, No. 19, 24, 25.]

1. Temper of mind; temporary state of the mind in regard to passion or feeling; humor; as, a melancholy mood; an angry mood; a suppliant mood. Dryden. Addison.
2. Anger; heat of temper. Hooker. [in this sense little used, unless qualified by an adjective.]