maven
/ˈmeɪv(ə)n
/noun [often with modifier] North American informal
An expert or connoisseur: fashion mavens call beige oatmeal...
- I swear to you, if my father starts wearing his beige and brown leisure suit again, I will make the fashion mavens responsible for this pay.
- Academics and poverty mavens know this to be the case, though they try to soften the harshness of its implications.
- I'm glad that he pointed out that being a great type designer does not make one a typewriter history maven.
Origin
1960s: Yiddish.