The French author Andre Gide is the answer to the crossword solutions for the term 'The Immoralist Author'. Gide was a Nobel Prize-winning author who wrote novels, plays, and essays. He is best known for his novel The Immoralist, which was published in 1902 and is considered one of his most important works. Gide was also a prominent figure in the French literary scene and was an advocate for freedom of expression.