insanest

Example:Her craziest idea was to start a business selling clear plastic umbrellas.

Definition:The superlative form of crazy, meaning extremely foolish, unreasonable, or eccentric.

Example:The most insane plan he ever proposed was to use spaghetti as the main building material for a skyscraper.

Definition:Indicating the highest degree of being insane or irrational, emphasizing the extent to which something is considered unreasonable or uncontrolled.

Example:He was the most mad of all, insisting that his pet goldfish was the ruler of the underwater kingdom.

Definition:Expressing the highest level of madness or insanity, often used to describe someone or something in an extreme state of irrationality.