Basic
Basic adjective - Of or relating to the simplest facts or theories of a subject.
Unfathomable is an antonym for basic.
Unfathomable
Unfathomable adjective - Impossible to understand.
Usage example: for some unfathomable reason the family decided to venture out into the blizzard
Basic is an antonym for unfathomable.
Both words in one sentence
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Moreover, Jurai is the absolute dominate power of the galaxy, whereas Yosho's mother, Funaho, was a commoner from a backwater Jurai colony inhabited by a backward civilization where basic concepts such as a 'light bulb' would seem utterly alien & unfathomable.
Source: Anime / Tenchi Muyo!
Cite this Source
Unfathomable and Basic. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/basic/unfathomable
Basic & Unfathomable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/basic/unfathomable>.
Unfathomable or Basic. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/basic/unfathomable.
Google Ngram Viewer shows how "basic" and "unfathomable" have occurred on timeline