1 definition by i_like_stuff
Someone who takes a particular interest in a certain subject, topic, hobby, thing, place or activity to the point where they are experts on said subject. The enthusiast may devote large amounts of time and energy to their subject of interest. At times the subject may be considered esoteric and one's preoccupation with said topic may seem odd, excessive or obsessive to those not interested in it.
My friend James is a Kmart enthusiast. He's been traveling to all remaining Kmarts to take pictures and videos to document the department store chain's slow demise.
by i_like_stuff March 5, 2021