idiosyncratic

Etymology

From idiosyncrasy + -ic.

adj

1. Peculiar to a specific individual; eccentric.
   At the time, I set it down to some idiosyncratic, personal distaste . . . but I have since had reason to believe the cause to lie much deeper in the nature of man. 1886, Robert Louis Stevenson, chapter 9, in Dr. Jekyll and Mr. Hyde
   It was no merely idiosyncratic experience, for the youth had the same: it was love! 1891, George MacDonald, chapter 12, in The Flight of the Shadow
   British Director Ronald Eyre kept the action crisp; he was correctly content to execute the composer's wishes, rather than impose a fashionably idiosyncratic view of his own. 26 April 1982, Michael Walsh, “Music: A Fresh Falstaff in Los Angeles”, in Time
   I’m not saying that Kaufman’s film will be enshrined as a classic, as those Kubrick films are. It’s too idiosyncratic and demanding for that: many viewers will be thinking of ending it halfway through 1 September 2020, Nicholas Barber, “Five stars for I'm Thinking of Ending Things”, in BBC