id·i·o·syn·cra·sy 
(ĭd′ē-ō-sĭngkrə-sē)
(ĭd′ē-ō-sĭngkrə-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 the Appendix of Indo-European roots).]
id′i·o·syn·cratic (-sĭn-krătĭk) adj.
id′i·o·syn·crati·cal·ly adv.
- Indo-European root: ned-
- Indo-European root: nek-
- Indo-European root: nek-
- Indo-European root: nekw-t-
- Indo-European root: nem-
- Indo-European root: nepōt-
- Indo-European root: ner-
- Indo-European root: ner-
- Indo-European root: nes-
- Indo-European root: nes-
- Indo-European root: neu-
- Indo-European root: newn̥
- Indo-European root: newo-
- Indo-European root: nobh-
- Indo-European root: nogh-
- Indo-European root: nogw-
- Indo-European root: nu-
- Indo-European root: nāu-
- Indo-European root: nō̆-men-
- Indo-European root: n̥dher-
- Indo-European root: od-
- Indo-European root: oi-no-
- Indo-European root: oit-
- Indo-European root: oktō(u)
- Indo-European root: okw-