Nero Wolfe is a fictional character created by American author Rex Stout. He is a large, eccentric private detective who solves difficult cases with the assistance of his assistant Archie Goodwin. The crossword solutions for Nero Wolfe, For One are SNOOP (5 letters), Privateeye (10 letters), and Privateinvestigator (19 letters). These terms all describe the job of a private investigator, which is what Nero Wolfe does in the stories.