from The Century Dictionary and Cyclopedia
- n. A mad fellow.
- Wild; cracked.
Sorry, no etymologies found.
Come, let us leave this madpash bedlam, this hairbrained fop, and give him leave to rave and dose his bellyful with his private and intimately acquainted devils, who, if they were not the very worst of all infernal fiends, would never have deigned to serve such a knavish barking cur as this is.
You’re wandering, woman -- maffling like a madpash.