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)
Hypernyms (Closely Related)
Hyponyms (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."