Mood, n.
Etymology: [OE. mood, mod, AS. modmind, feeling, heart, courage; akin to OS. & OFries. mod, D. moed, OHG. muot, G. muth, mut, courage, Dan. & Sw. mod, Icel. mo wrath, Goth. mods.]
Temper of mind; temporary state of the mind in regard to passion or feeling; humor; as, a melancholy mood; a suppliant mood. Till at the last aslaked was mood. Chaucer. Fortune is merry, And in this mood will give us anything. Shak. The desperate recklessness of her mood. Hawthorne.
1 other Webster entry under this spelling
Mood, n.
1. Manner; style; mode; logical form; musical style; manner of action or being. See Mode which is the preferable form).
2. (Gram.)
Manner of conceiving and expressing action or being, as positive, possible, hypothetical, etc., without regard to other accidents, such as time, person, number, etc.; as, the indicative mood; the infinitive mood; the subjunctive mood. Same as Mode.
Shades of meaning
Fernald has no entry of its own for mood; he lists it under fancy.
He lists it without comment; the entries above explain its neighbors.