the quality or state of being simple, unmixed, or uncompounded; as, the simplicity of metals or of earths.-the quality or state of being not complex, or of consisting of few parts; as, the simplicity of a machine.-artlessness of mind; freedom from cunning or duplicity; lack of acuteness and sagacity.-freedom from artificial ornament, pretentious style, or luxury; plainness; as, simplicity of dress, of style, or of language; simplicity of diet; simplicity of life.-freedom from subtlety or abstruseness; clearness; as, the simplicity of a doctrine; the simplicity of an explanation or a demonstration.-weakness of intellect; silliness; folly.