Comparative evidence

ǵʰeh₁i̯, ǵʰeh₂i̯

• Lat. hīscō -ere ‘(begin to) open’, ‘gape’, ‘open the mouth to speak’ (OLD: 798-799)

• Lat. hiō -āre ‘be wide open’, ‘gape’, ‘have the mouth wide open’(OLD: 797)

References

OLD = Glare, P. G. W. 1968. Oxford Latin Dictionary. Oxford: Clarendon Press.