English
aghastness
From aghast + -ness.
A compound of aghast + -ness
Proto-Indo-European *úd ‘up, out’
…
Proto-Germanic *uz- ‘up, out’
Proto-West Germanic *uʀ- ‘up, out, over’
Middle English agasten ‘to terrify’
Middle English agast
English aghast
Today it means
noun The state or quality of being aghast.
Language periods are conventional ranges, not dates for this word.
Etymograph / aghastness