singleness

From single +‎ -ness.

singleness (countable and uncountable, plural singlenesses)

1. (uncountable) The property of being single.
2. (countable) The result or product of being single.

• (property of being single): See also Thesaurus:oneness

• (antonym(s) of “property of being single”): manyness, multiplicity; see also Thesaurus:manyness

• lessenings