Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
devalue [ˈdiːˈvæljuː] vt (currency) обесце́нивать (обесце́нить perf) (person, work) недооце́нивать (недооцени́ть perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: