"I know nothing about that," said Sancho; "all I know is it will be my bad luck that through not finding this head my county will melt away like salt in water;"—for Sancho awake was worse than his master asleep, so much had his master’s promises addled his wits.
…that all you tell me about chivalry, and winning kingdoms and empires, and giving islands, and bestowing other rewards and dignities after the custom of knights-errant, must be all made up of wind and lies, and all pigments or figments, or whatever we may call them; for what would anyone think that heard your worship calling a barber’s basin Mambrino’s helmet without ever seeing the mistake all this time, but that one who says and maintains such things must have his brains addled?
There are no more uses of "addle" in the book.
Show samples from other sources
But she counted and counted till she got that addled she’d start to count in the basket for a spoon sometimes; and so, three times they come out right, and three times they come out wrong.
Mark Twain -- The Adventures of Huckleberry Finn
Although her relations with Atticus and Jem had reached their lowest ebb ("You’re downright addled these days, Jean Louise," her father had said.