What is another word for most crackpot?
Pronunciation: [mˈə͡ʊst kɹˈakpɒt] (IPA) 
Most crackpot is an idiomatic phrase that refers to something that is bizarre, unreasonable, or nonsensical. Synonyms for this term include phrases like most absurd, most insane, or most irrational. Other useful synonyms to describe something strange or wacky include words like most far-fetched, most preposterous, or most outlandish. Alternately, you might describe a thing as most harebrained, most senseless, or most ludicrous. No matter what word you choose, the important thing is to convey the idea that the concept or opinion being described is so far removed from reality that it can only be described as a little bit nuts.
