Dictionary:

addlepated

  (ăd'l-pā'tĭd)

1. Befuddled; confused.
2. Eccentric; peculiar: “[Her] estates . . . are odes to addlepated excess, a melange of priceless antiques and thrift-store horrors” (Michelle Green).
3. Senseless; mad: “led the addlepated charge of the Light Brigade at Balaclava” (Thomas Flanagan).

adjective

Mentally uncertain: addled, confounded, confused, confusional, muddle-headed, perplexed, turbid. Informal mixed-up. See clear/unclear.

The adjective has one meaning:

Meaning #1: stupid and confused; used especially of persons
  Synonyms: addlebrained, potty, puddingheaded, muddleheaded