[ˈflatnəs], (Noun)

Definitions:
- the quality of having a level surface without raised areas or indentations
(e.g: the flatness of the external surface)

- lack of emotion or enthusiasm; dullness
(e.g: neither the editing nor the score do much to help the film's emotional flatness)

- loss of effervescence in a sparkling drink

- the quality of a musical sound being below normal pitch
(e.g: the flatness of the vocals)


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Origin: