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| English | Russian |
| could not care less | совершенно не заботиться (ybelov) |
| could not care less | абсолютно безразлично (EKochmar) |
| could not care less | наплевать (EKochmar) |
| could not care less | даже в мыслях не иметь (ybelov) |
| to not care less about | по барабану (something) |
| to not care less or a wit about | до барабана (something) |