Robert A. Heinlein was a prolific science-fiction writer who is often called the "dean of science fiction writers." Some synonyms for his name might include his various pen names, such as Anson McDonald or Lyle Monroe. Alternatively, he is known by the titles of some of his most famous works, such as "Stranger in a Strange Land" or "Starship Troopers." Other synonyms could include phrases that describe his writing style or themes, such as "hard science fiction" or "speculative fiction." Overall, Heinlein was a celebrated author whose work continues to inspire and influence science-fiction and fantasy writing today.