Noun
(uncountable) A class of fiction involving fantastic, supernatural or futuristic elements, including fantasy, horror, and science fiction, dealing with worlds, themes, and characters not part of everyday life. [from 20th c.]
(countable) A particular work belonging to this class.
Source: en.wiktionary.orgI wrote speculative fiction because I loved to read it, and thought I could do better than some of the people who were getting published. Fred Saberhagen
IF YOU ARE ACCUSTOMED to reading works of speculative fiction and enjoy puzzling things out on your own, skip this Note. Otherwise, know that the scene in which this book is set is not Earth, but a planet called Arbre that is similar to Earth in many ways. Neal Stephenson
I write speculative fiction, and in my view, speculative fiction is really just a very intense version of the work of literature in general. Ken Liu
The Singaporean speculative tradition is different. Singapore doesn't conceive itself as the centre of the world or the one country that's going to save the world, so there's a different tone that comes out in the way speculative fiction is done. That's refreshing to read. Ken Liu
Speculative fiction encompasses that which we could actually do. Sci-fi is that which we're probably not going to see. Margaret Atwood