addle

But, like every addled maniac, his hatred lacks focus.

After delivering a rousing State of the Union address in March, Biden showed up for his June debate with Trump so addled that the party backlash forced him from the ticket.

He was always a bad leader, but he's increasingly old and addled, making keeping his party in line even harder.

He’s more concerned with the character’s state of mind, which is troubled, addled from drugs and booze, and driven almost mad with yearning.

Trump’s apparently already addled mind and debauched morals are in terminal decline, and his campaign isn’t doing much right.