What does "preposterousness" mean?

The quality of being preposterous.

What is a synonym for "preposterousness"?

Common synonyms include: absurdity, excess, excessiveness, exorbitance, extravagance, folly.

noun

noun ·Rare ·Advanced level

Noun

1
The quality of being preposterous. uncountable
"Vern shook her head at the preposterousness of it."

"Vern shook her head at the preposterousness of it."

From preposterous + -ness.