Comparative evidence

dʰers

• OInd. dhr̥ṣ 'dare', 'be bold', 'be courageous', 'beconfident', 'be proud', 'venture', 'surpass' (MW: 519; Whitney 1885: 85)

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