ADDLED

• All mixed up

• Bewildered

• Confounded

• Confused

• Confused, and this puzzle's title

• Daft

• Discombobulated

• Disconcerted

• Fuzzy

• In a fog

• Like many a ditz

• Mentally mixed up

• Mixed up

• Muddled

• Muddleheaded

• Non compos mentis

• Perplexed

• Punch-drunk

• Puzzled

• Scatterbrained

• Slaphappy, say

• Stoned, perhaps

• Thoroughly confused