English
everlastingness
From everlasting + -ness.
Formed from everlasting + -ness
Middle English ever ‘at all times, always, constantly’
Middle English ever-lasting ‘(adjective) eternal, perpetual’
English everlasting
Today it means
noun the state or quality of being everlasting
Language periods are conventional ranges, not dates for this word.
Etymograph / everlastingness