Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
withhold [wɪθˈhəuld] irreg like hold vt (money) уде́рживать (удержа́ть*perf) (permission) не дава́ть*(дать*perf) (information) ута́ивать (утаи́ть perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: