Definitions
There are 2 meanings of the phrase
Big Deal.
Big Deal - as a noun
An important influential person
Example: "He thinks he's a big shot"
Synonyms (Exact Relations)
big cheesebig enchiladabig fishbig gunbig shotbig wheelhead honchoHypernyms (Closely Related)
important personinfluential personpersonageHyponyms (Broadly Related)
Anything of great importance or consequence
Example Sentences
"Winning the lottery is a big deal."
"Getting into a top university is a big deal."
"Being promoted to manager is a big deal."
"Moving to a new city can be a big deal."
"Achieving your goals is a big deal."