01 n. The quality or state of being single, or separate from all others; the opposite of doubleness, complication, or multiplicity.
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1.
The quality or state of being single, or separate from all others; the opposite of doubleness, complication, or multiplicity.
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2.
Freedom from duplicity, or secondary and selfish ends; purity of mind or purpose; simplicity; sincerity; as, singleness of purpose; singleness of heart.