Comparative evidence

gʷʰen

• Hitt. kuen- /kun- 'kill', 'slay', 'smite', 'ruin' (EDHIL: 485f., HED 4:206ff.)

References

EDHIL = Kloekhorst, A. 2008. Etymological Dictionary of the Hittite Inherited Lexicon. Brill.
HED = Puhvel, J. 1984 - . Hittite Etymological Dictionary. Mouton.