Strong's G2030 — ἐπόπτης (noun)
epoptes (ep-op'-tace) n.
1. a looker-on
[from G1909 and a presumed derivative of G3700]
KJV: eye-witness 
Root(s): G1909, G3700 
Hebrew root: ὀπτάνομαι
Occurrences: 1