All 3 Uses of

melancholy
in
A Room of One's Own

She suffered terribly from melancholy, which we can explain at least to some extent when we find her telling us how in the grip of it she would imagine: My lines decried, and my employment thought An useless folly or presumptuous fault: The employment, which was thus censured, was, as far as one can see, the harmless one of rambling about the fields and dreaming: My hand delights to trace unusual things, And deviates from the known and common way, Nor will in fading silks compose, Faintly the inimitable rose.†
Chpt 4

melancholy = a sad feeling or manner

But there I do not agree with him, for I should have liked to have had more even of dubious gossip so that I might have found out or made up some image of this melancholy lady, who loved wandering in the fields and thinking about unusual things and scorned, so rashly, so unwisely, 'the dull manage of a servile house'.†
Chpt 4

And so, since no woman of sense and modesty could write books, Dorothy, who was sensitive and melancholy, the very opposite of the Duchess in temper, wrote nothing.†
Chpt 4 *

Definition:

a sad feeling or manner -- sometimes thoughtfully sad