Comparative evidence

kemp, kʷemp

• OInd. kamp- 'tremble' (Whitney 1885: 17); 'shake'; 'pronounce in a tremulous manner' (MW: 252)

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.