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| Russian | English |
| действовать излишне самоуверенно и потерпеть неудачу | overplay one's hand (Spoil one's chance of success through excessive confidence in one's position: ‘she chose to overplay her hand and lost the sympathy of those who could have saved her' Bullfinch) |
| самоуверенно-снисходительный тон | mansplaining |
| слишком самоуверенно | overconfidently ('More) |