الواصلة
 mad as a hat·terالتركية النطق
 mäd äz ı hätırالنطق
 /ˈmad ˈaz ə ˈhatər/ /ˈmæd ˈæz ə ˈhætɜr/
علم أصول الكلمات
  ()  Disputed. Possibly from Old English ātor (“poison”), and thus related to English atter. Alternatively from hat-makers suffering from Korsakoff's syndrome due to handling mercury-contaminated felt.