Comparative evidence

ǵʰrei̯h₁, ǵʰrei̯h₂, ǵʰrei̯h₃

• OInd. hrī- 'be ashamed' (Whitney 1885: 209); 'feel shame', 'blush', 'be bashful', 'be modest' (MW: 1307)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.