maven
UK: ˈmeɪvən | US: ˈmeɪvən
n. an expert or connoisseur; a person with deep knowledge or skill in a particular area.
The word "maven" comes from Yiddish meyvn, meaning "expert" or "knowledgeable person," which itself derives from Hebrew mēvīn (מֵבִין), meaning "one who understands." It entered American English in the mid-20th century, popularized by advertising and media, and retains its core meaning of a highly skilled or informed individual.
She's a fashion maven, always ahead of the latest trends.
As a tech maven, he effortlessly troubleshoots complex software issues.
The wine maven recommended an excellent vintage for the dinner party.
Local food mavens flock to her bakery for its artisanal bread.
He’s regarded as a maven in classical music history.