English

erroneousness

From erroneous + -ness.

A compound of erroneous + -ness

Latin errō ‘wanderer, vagabond’

Latin erroneus ‘wandering, straying, vagrant’

Middle French erroneux

Middle English erroneous

Today it means

noun The state of being in error; the quality of being erroneous.

Language periods are conventional ranges, not dates for this word.

Etymograph / erroneousness