- большие дела
- • БОЛЬШОЕ <ВЕЛИКОЕ> ДЕЛО; БОЛЬШИЕ ДЕЛ A all coll[NP; these forms only; used as Intefj or sent adv; fixed WO]=====⇒ used to express a sarcastic attitude, disdain etc toward sth.:- big deal!;- [in limited contexts] as if it mattered;- as if it could make (all) that much (of a) difference.♦ Следующий сюрприз ждал Куницера в гардеробе собственного института. Новый гардеробщик прищуренным чекистским взглядом смотрел на него... Да ладно, большое дело - новый гардеробщик! Отдал пальто, получил номерок, отдал номерок, взял пальто, вот и все отношения (Аксёнов 6). The next surprise awaited Kunitser in the cloakroom of his own institute. A new attendant was looking at him with the frowning stare of a KGB oficer... OK, big deal! A new cloakroom attendant! He handed in his coat, got a tag, gave in his tag and got his coat back - that was the sum of his dealings with the man (6a).
Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. С.И. Лубенская. 2004.