come (go) again, convert, (re-)turn (about, again)

Dictionary of Biblical Words:

These words are used about thirty-eight times in the New Testament. It is translated “convert” nine times, and about thirty times “turn, return or turn about.” In the present day it is exclusively used for the “new birth,” or “salvation.” In Scripture, however, it is by no means confined to this (see Luke 22:3232But I have prayed for thee, that thy faith fail not: and when thou art converted, strengthen thy brethren. (Luke 22:32)), and simply signifies a “turning round.” This “turning round” first occurs necessarily when we are turned from darkness to light, but also whenever we are restored after going astray.

Strong’s Dictionary of Greek Words:

Number:
1994 (find all occurrences in KJV Bible)
Greek:
ἐπιστρέφω
Transliteration:
epistrepho
Phonic:
ep-ee-stref’-o
Meaning:
from 1909 and 4762; to revert (literally, figuratively or morally)
KJV Usage:
come (go) again, convert, (re-)turn (about, again)