'Flatted' definitions:

Definition of 'Flatted'

From: GCIDE

Flat \Flat\, v. t. [imp. & p. p. Flatted; p. pr. & vb. n. Flatting.]
1. To make flat; to flatten; to level. [1913 Webster]
2. To render dull, insipid, or spiritless; to depress. [1913 Webster]
Passions are allayed, appetites are flatted. --Barrow. [1913 Webster]
3. To depress in tone, as a musical note; especially, to lower in pitch by half a tone. [1913 Webster]