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| English | Russian |
| head-scratching | загадочный (Weather experts are baffled after over 100 mature trees were knocked down in Washington State. The head-scratching event occurred in the early morning hours at the Olympic National Park. A mysterious rumbling sound was heard by people living nearby. -- загадочное происшествие (coasttocoastam.com) ART Vancouver) |
| left scratching one's head | в недоумении ("Despite a thorough ground and air search of the area, investigators are left scratching their heads and wondering what may have happened to the person or people who created the SOS sign in the bush hundreds of miles away from the nearest settlement. (coasttocoastam.com) ART Vancouver) |
| scratch at each other | грызться (Abysslooker) |
| Scratch my back and I'll scratch yours. | Рука руку моет |