Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
insipid [ɪnˈsɪpɪd] adj (person) бесцве́тный*бесцве́тен (colour) блёклый; (food, drink) пре́сный*пре́сен
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.