What does "loneness" mean?

The state of being alone; loneliness, solitariness.

What is a synonym for "loneness"?

Common synonyms include: alienation, celibacy, detachment, isolation, loneliness, lonesomeness.

/ˈləʊn.nəs/ noun

noun ·Rare ·Advanced level

Noun

1
The state of being alone; loneliness, solitariness. archaic, uncountable
"Her who loves lonenesse best, and her who maskes and plaies […]"

"Her who loves lonenesse best, and her who maskes and plaies […]"

From lone + -ness.