Comparative evidence

2.gʰes, 2.gʷʰes

• OInd. has- 'laugh' (Whitney 1885: 203); 'smile', 'laugh at'; 'deride', 'mock', 'ridicule'; 'surpass', 'excel'; 'expand', 'open' (as a blossom) (MW: 1294)

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.