Strong’s Greek
G1387 — dolioo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
δολιόω
dolioo — pronounced dol-ee-o'-o
from 1386; to be guileful:--use deceit. see GREEK for 1386
1 occurrence in the KJV.
Romans 3:13
Their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips: