IPA: /ˈmɑːkər/
KK: /ˈmɑːkər/
A person who has a lot of influence or power, often in a way that is seen as self-important or arrogant.
He is a real macher in the business world, always making big decisions.
Macher originates from Yiddish 'makher', meaning a person who makes or does things, often with a connotation of being influential or a mover and shaker. The term reflects someone who is active and effective in their endeavors.
Think of someone who is a 'maker' or doer, which helps you remember that a 'macher' is a person who gets things done and often has influence.