Sentence:  So come on, doc, precisely which kind of <WSD>sicko</WSD> is America? You might plump for depressed (isolationist), psychopathic (lack of empathy) or even psychotic (barking mad - what P.G. Wodehouse referred to as "thinking you&#39;re a poached egg"). 
Meaning of the word marked with <WSD> tags:  A mentally ill person.