From Longman Dictionary of Contemporary Englishaddlead‧dle /ˈædl/ verb [transitive] old-fashioned CONFUSEDto confuse someone so they cannot think properlyaddle somebody’s brains/wits All that drink has addled his brains!→ See Verb table
Examples from the Corpus
addle• A few cocktails later, enough to addle my memory, I found myself in bed with Bob. 