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| Subject | English | Russian |
| rhetor. | sell the spin with a straight face | на полном серьёзе задвигать чушь (CNN, 2019 Alex_Odeychuk) |
| inf. | with a straight face | на полном серьёзе (masizonenko) |
| gen. | with a straight face | всерьёз (We can say that with a a straight face. ART Vancouver) |