id·i·o·syn·cra·sy (ĭd′ē-ō-sĭng′krə-sē)
n. pl. id·i·o·syn·cra·sies
1. A structural or behavioral characteristic peculiar to an individual or group.
2. A physiological or temperamental peculiarity.
3. An unusual individual reaction to food or a drug.

[Greek idiosunkrāsiā : idio-, idio- + sunkrāsis, mixture, temperament (sun-, syn- + krāsis, a mixing; see kerə- in Indo-European roots).]

id′i·o·syn·crat′ic (-sĭn-krăt′ĭk) adj.
id′i·o·syn·crat′i·cal·ly adv.

https://bandcamp.com/idiosyncraticsounds
https://hearthis.at/idiosyncratic-sounds/