ДЕЛ A all coll

NP these forms only used as Interj 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).