Comparative evidence

srei̯h₁g, srei̯h₂g, srei̯h₃g, srei̯h₁ǵ, srei̯h₂ǵ, srei̯h₃ǵ

• Lat. frīgeō -ēre ‘to be cold’, ‘lack vigour’, ‘fail’, ‘have a cool reception’ (OLD: 735)

References

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