Inside
Inside adjective - Situated farther in.
Usage example: chose the inside lane to run around the track
Nearby Word: insider
Outer
Outer adjective - Situated on the outside or farther out.
Usage example: the outer edge of the blade of your figure skate always wears out faster than the inner because you use it more
Both words in one sentence
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Bigger on the Inside: The film crew even remarked that they had done both ocean and outer space before, but the human brain proved to be the biggest of all.
Source: Western Animation / Inside Out - A bunch of claymation dogs and their adventures through time, outer-space, 'inside brains'...
Source: Widget Series -
He is blown into outer space while inside the Armadillo, and where as every other character death in the movie was killed pretty much instantly, he will die slowly and be aware and alone.
Source: Film / Armageddon
Cite this Source
Outer and Inside. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/inside/outer
Inside & Outer. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/inside/outer>.
Outer or Inside. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/inside/outer.
Google Ngram Viewer shows how "inside" and "outer" have occurred on timeline