モノマニア

noun

monomania

A psychiatric term for an excessive, obsessive preoccupation with a single idea or subject. In everyday Japanese, it can also refer to an extreme fixation or obsession, similar to 'monomania' in English.

• 彼かれのモノマニア的てきな収しゅう集しゅう癖へきには驚おどろかされる。

  His monomaniacal collecting habit is astonishing.

• その作さっ家かは特とく定ていのテーマにモノマニア的てきなこだわりを持もっている。

  That writer has a monomaniacal fixation on a particular theme.