Make unintelligible is a term used to describe the process of making something difficult or impossible to understand. SCRAMBLE, with 8 letters, is a term used to describe the process of rearranging letters or words in a random order. OBFUSCATE, with 9 letters, is a term used to describe the process of making something unclear or confusing. ENCODE, with 6 letters, is a term used to describe the process of converting information into a secret code.