(1):
(n.) Depression of tone; the state of being below the true pitch; - opposed to sharpness or acuteness.
(2):
(n.) The quality or state of being flat.
(3):
(n.) Eveness of surface; want of relief or prominence; the state of being plane or level.
(4):
(n.) Want of vivacity or spirit; prostration; dejection; depression.
(5):
(n.) Want of variety or flavor; dullness; insipidity.