Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
cutthroat [ˈkʌtθrəut] n головоре́з#
adj (fig) беспоща́дный
cutthroat competition жёсткая конкуре́нция
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: