Comparative evidence

gei̯s, ǵei̯s

• Hitt. kīs- /kis- 'happen', 'occur', 'become' (EDHIL: 479ff.)

• Hitt. kikkis- 'happen', 'turn out to be' (EDHIL: 479ff.)

References

EDHIL = Kloekhorst, A. 2008. Etymological Dictionary of the Hittite Inherited Lexicon. Brill.