cacoëthes

n.
An irresistible compulsion; a mania.

[Latin cacoēthes, from neuter of Greek kakoēthēs, ill-disposed : kakos, bad + ēthos, disposition.]

/ka ke WEE theez/  an uncontrollable or insatiable desire: mania

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The noun has one meaning:

Meaning #1: an irrational but irresistible motive for a belief or action
  Synonyms: mania, passion

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