connoisseur

A connoisseur (Fr. connaisseur, from connoistre, connaître meaning "to be acquainted with" or "to know sb/sth.") is a person - amateur or professional - who has a great deal of knowledge through experience and training about the fine arts or a field of study, and can be an expert judge in matters of taste.

The most common connoisseurs are for wines, painting, cinema, coffees, chocolates and rocks.

But if YOU ought to be a connoisseur about something, anything. anything at all. What would be that specific field of study that you are sooo passionate about and would like to know absolutely everything about it ?????

I would like to be a connoisseur of coulds, stars, or trees.

what about you?