Permafrost
Water
Water noun - Binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent.
Permafrost is an antonym for water.
Both words in one sentence
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There is water on Mars, frozen in the permafrost, and water molecules do contain oxygen atoms which can be liberated by electrolysis (and, hence, breathed, without the need to carry your own oxygen supply to Mars from Earth).
Source: Useful Notes / Dan Quayle
Cite this Source
Water and Permafrost. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/permafrost/water
Permafrost & Water. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/permafrost/water>.
Water or Permafrost. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/permafrost/water.
Google Ngram Viewer shows how "permafrost" and "water" have occurred on timeline