Comparative evidence

ḱeu̯bʰ

• OInd. śubh-/śumbh- 'beautify' (Whitney 1885: 175); 'adorn', 'beautify one's self', 'look beautiful', 'look handsome', 'shine', 'be bright', 'be splendid; (with iva or yathā) 'shine like', 'look like'; (with na) 'look bad', 'have a bad appearance', 'appear to disadvantage'; 'prepare', 'make fit', 'make ready', 'prepare one's self'; 'flash', 'flit', 'glide rapidly' (past or along); 'harm', 'injure' (MW: 1083)

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.