CACOETHES
mania, passion, cacoethes
(noun) an irrational but irresistible motive for a belief or action
Source: WordNet® 3.1
Etymology
Noun
cacoethes (plural cacoethe)
Compulsion; mania.
(medicine, obsolete) A bad quality or disposition in a disease; a malignant tumour or ulcer.
Usage notes
Not to be confused with cacoethics (“bad ethics or morals; bad habits”).
Anagrams
• coteaches
Source: Wiktionary
Cac`o*ë"thes, n. Etym: [L., fr. Gr.
1. A bad custom or habit; an insatiable desire; as, cacoëthes
scribendi, "The itch for writing". Addison.
2. (Med.)
Definition: A bad quality or disposition in a disease; an incurable ulcer.
Source: Webster’s Unabridged Dictionary 1913 Edition