n. 恶癖, 难抑的欲望

[医] 恶习, 恶癖

[ noun ]
an irrational but irresistible motive for a belief or action
<noun.motive>

Cacoethes \Cac`o*["e]"thes\, n. [L., fr. Gr. ???????? of ill
habits, ?? ???????? an ill habit; kako`s bad + ? habit]
1. A bad custom or habit; an insatiable desire; as,
caco["e]thes scribendi, ``The itch for writing''.
--Addison.

2. (Med.) A bad quality or disposition in a disease; an
incurable ulcer.