one in a million
idiomPart ofmillion
one in a million — idiom
1. a very special, rare, or exceptional person or thing that is unlike any other.
1.idiom
Definition
a very special, rare, or exceptional person or thing that is unlike any other.
Example
My grandmother is truly one in a million — she always knows how to cheer me up.
This old watch is one in a million; I have never seen another like it.