English
spectatorial
From spectator + -ial.
Formed from spectator + -ial
Proto-Indo-European *speḱ- ‘to see, to look, to observe’
…
Proto-Italic *spekjō ‘to observe, see’
Latin speciō ‘look at’
Latin spectō ‘watch’
Latin spectātor ‘spectator, watcher’
English spectator
Today it means
adj Pertaining to a spectator.
Language periods are conventional ranges, not dates for this word.
Etymograph / spectatorial