big deal noun
Learner's definition of BIG DEAL
[singular]
: something that is very important至关重要的大事；了不得的事情 -
The party was a big deal.这个聚会很重要。
-
The cost didn't seem like much to me, but I know it was a big deal for many people.这笔费用对我来说似乎不算什么，但我知道它对很多人来说是件大事。
-
So I'm late. What's the big deal? [=why is that important?]我是迟到了。有什么大不了的？
—
often used in negative statements常用于否定句 -
Flying is no big deal to him.飞行对他来说不是什么了不起的事。
-
Don't worry, it's no big deal. [=it's not a problem]别担心，不要紧的。
—
sometimes used ironically as an interjection to say that something is not important to you有时用作感叹词，以讽刺的语气表示某事对你不重要
make a big deal (out) of (something)
or make (something) into a big deal
: to treat (something) as very important or too important把…看得很重要；把…小题大做 -
The girl's song was far from perfect, but her parents made a big deal of it, and she was very happy.那个女孩的歌声距离完美差远了，但她父母对此激动万分，她也因此很开心。
-
Don't make such a big deal (out) of missing the bus: there'll be another one along in a minute.没赶上公共汽车也没什么大不了的，下一趟马上就来了。