Spectator

·noun One who on; one who sees or beholds; a beholder; one who is personally present at, and sees, any exhibition; as, the spectators at a show.

spectator
spectātor, ōris, m. [specto], a looker-on, beholder, observer, spectator (class.). I In gen.: sunt...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
spectator
spectātor ōris, m specto, a looker-on, beholder, observer, spectator : quasi spectatores superarum...

An Elementary Latin Dictionary