Documentary
Documentary adjective - Restricted to or based on fact.
Usage example: a documentary film about the surprise attack on Pearl Harbor
Speculative is an antonym for documentary.
Speculative
Speculative adjective - Existing only as an assumption or speculation.
Documentary is an antonym for speculative.
Both words in one sentence
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They showed clips of a History Channel documentary about the subject in which two speculative experts postulated that "One thing everyone does agree upon is that one or more of the mating partners needs to be restrained."
Source: Zero-G Spot -
Speculative Documentary: One of the earliest and most famous works in the genre.
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On the Speculative Documentary Alien Planet (based on Barlowe's Expedition), the groveback is a gigantic animal that goes about on two legs and a massive supporting tail.
Source: Tripod Terror
Cite this Source
Speculative and Documentary. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/documentary/speculative
Documentary & Speculative. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/documentary/speculative>.
Speculative or Documentary. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/documentary/speculative.
Google Ngram Viewer shows how "documentary" and "speculative" have occurred on timeline