The fact or quality of having many sides or facets.(noun)
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Use "many-sidedness" in a sentence
"And because of this, because modern civilization makes demands on our alertness and many-sidedness with which our wits and sympathies cannot cope, it tends to degenerate into anarchy."
"We must accept the many-sidedness of the manifestation even while we assert the unity of the Manifested."
"As the complexity of mechanics cannot be understood without mathematics, so neither can the many-sidedness of the mental and moral world be truly apprehended without the assistance of new forms of thought."