DECEIT

de-set' (mirmah; (dolos): The intentional misleading or beguiling of another; in Scripture represented as a companion of many other forms of wickedness, as cursing (Psalms 10:7), hatred (Proverbs 26:24), theft, covetousness, adultery, murder (Mark 7:22; Romans 1:29). The Revised Version (British and American) introduces the word in Proverbs 14:25; 2 Thessalonians 2:10; but in such passages as Psalms 55:11; Proverbs 20:17; 26:26; 1 Thessalonians 2:3, renders a variety of words, more accurately than the King James Version, by "oppression," "falsehood," "guile," "error."

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.