COVET

kuv'-et ('awah; zeloo, "to desire earnestly," "to set the heart and mind upon anything"): Used in two senses: good, simply to desire earnestly but legitimately. e.g. the King James Version 1 Cor 12:31; 14:39; bad, to desire unlawfully, or to secure illegitimately (batsa`; epithumeo, Romans 7:7; 13:9, etc.); hence, called "lust" (Matthew 5:28; 1 Corinthians 10:6), "concupiscence" (the King James Version Romans 7:8; Colossians 3:5).

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