is a specific kind of: sadness, unhappiness.

is a broader term that covers: joylessness.

is the opposite of: blitheness, cheerfulness.

derivation: cheerless, depressing, uncheerful.

is a specific kind of: attribute.

is a broader term that covers: gloominess, lugubriousness, sadness.

is a part of: disposition, temperament.

is the opposite of: cheer, cheerfulness, sunniness, sunshine.

derivation: cheerless, depressing, uncheerful.