| English | Russian |
| cool as a cucumber | спокойный как удав (Technical) |
| cool boy | крутышка (diminutive and feminine noun from adjective "крутой" – cool; applies to anyone ironically or condescendingly Vadim Rouminsky) |
| cool cat | хороший парень (Taras) |
| cool down! | потише! (Ivan Pisarev) |
| cool down! | тихо! (Ivan Pisarev) |
| cool girl | крутышка (diminutive and feminine noun from adjective "крутой" – cool; applies to anyone ironically or condescendingly Vadim Rouminsky) |
| cool guy | крутышка (diminutive and feminine noun from adjective "крутой" – cool; applies to anyone ironically or condescendingly Vadim Rouminsky) |
| cool kid | крутышка (diminutive and feminine noun from adjective "крутой" – cool; applies to anyone ironically or condescendingly Vadim Rouminsky) |
| cool person | крутышка (diminutive and feminine noun from adjective "крутой" – cool; applies to anyone ironically or condescendingly Vadim Rouminsky) |