What does "boundlessness" mean?

The property of being boundless, of being without limits or ends.

What is a synonym for "boundlessness"?

Common synonyms include: infinity, abandon, amplitude, bulk, enormity, eternity.

noun

noun ·Rare ·Advanced level

Noun

1
The property of being boundless, of being without limits or ends. uncountable, usually
"The boundlessness of the night sky mocks our sense of scale."
2
the quality of being infinite; without bound or limit wordnet

"The boundlessness of the night sky mocks our sense of scale."

From boundless + -ness.