G4122 — pleonekteo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
pleonekteo — pronounced pleh-on-cek-teh'-o
from 4123; to be covetous, i.e. (by implication) to over-reach:--get an advantage, defraud, make a gain. see GREEK for 4123
5 occurrences in the KJV.
2 Corinthians 2:11
Lest Satan should get an advantage of us: for we are not ignorant of his devices.
2 Corinthians 7:2
Receive us; we have wronged no man, we have corrupted no man, we have defrauded no man.
2 Corinthians 12:17
Did I make a gain of you by any of them whom I sent unto you?
2 Corinthians 12:18
I desired Titus, and with him I sent a brother. Did Titus make a gain of you? walked we not in the same spirit? walked we not in the same steps?
1 Thessalonians 4:6
That no man go beyond and defraud his brother in any matter: because that the Lord is the avenger of all such, as we also have forewarned you and testified.