Strong's G1937 — ἐπιθυμέω (verb)
epithumeo (ep-ee-thoo-meh'-o) v.
1. to set the heart upon, i.e. long for (rightfully or otherwise)
[from G1909 and G2372]
KJV: covet, desire, would fain, lust (after) 
Root(s): G1909, G2372 
Hebrew root: θυμός
Occurrences: 16