Strong's G3694 — ὀπίσω (adverb)
opiso (op-is'-o) adv.
1. to the back, i.e. aback
{as adverb or preposition of time or place; or as noun}
[from opis (regard]
KJV: after, back(-ward), (+ get) behind, + follow 
Root(s): G3700 
See also: G3693 
Hebrew root: ὀπτάνομαι
Occurrences: 35