covet, desire, would fain, lust (after)

Boyd’s Bible Dictionary:

(desire). Rightful desire (1 Cor. 12:31, good). Wrongful desire, sinful (Ex. 20:17; 18:21; Prov. 28:16; Luke 12:15-34; 1 Tim. 6:9-10).

“Covet, To” From Concise Bible Dictionary:

In 1 Corinthians 12:31 and 1 Corinthians 14:39, the word is ζηλόω, and is quite different from the coveting that is condemned in scripture; it is translated in Revelation 3:19 “be zealous,” and the above passages in Corinthians can be so translated, or “desire earnestly” the best gifts, and “desire earnestly” to prophesy.

“Lust, To” From Concise Bible Dictionary:

The word έπιθυμέω signifies “to desire earnestly,” and is often translated “desire,” without the thought of the desire being an evil one, as in Matthew 13:17; 1 Timothy 3:1; 1 Peter 1:12. The English word “lust” was anciently not always used in a bad sense, as it now is (see Deuteronomy 12:15 and Galatians 5:17).

Strong’s Dictionary of Greek Words:

Greek:
ἐπιθυμέω
Transliteration:
epithumeo
Phonic:
ep-ee-thoo-meh’-o
Meaning:
from 1909 and 2372; to set the heart upon, i.e. long for (rightfully or otherwise)
KJV Usage:
covet, desire, would fain, lust (after)