Definify.com
Webster 1913 Edition
flatness
flat′ness
,Noun.
1.
The quality or state of being flat.
2.
Eveness of surface; want of relief or prominence; the state of being plane or level.
3.
Want of vivacity or spirit; prostration; dejection; depression.
4.
Want of variety or flavor; dullness; insipidity.
5.
Depression of tone; the state of being below the true pitch; – opposed to
sharpness
or acuteness
. Webster 1828 Edition
Flatness
FLAT'NESS
, n.1.
Evenness of surface; levelness; equality of surface.2.
Want of relief or prominence; as the flatness of a figure in sculpture.3.
Deadness; vapidness; insipidity; as the flatness of cider or beer.4.
Dejection of fortune; low state.The flatness of my misery.
5.
Dejection of mind; a low state of the spirits; depression; want of life.6.
Dullness; want of point; insipidity; frigidity.Some of Homer's translators have swelled into fustian, and others sunk into flatness.
7.
Gravity of sound, as opposed to sharpness, acuteness or shrillness.Flatness of sound - joined with a harshness.