Ground
Underside
Underside noun - The side or part facing downward from something.
Usage example: the underside of the cat's coat is pure white
Mutual synonyms
Both words in one sentence
- The curious physics allow players to drive their vehicles into the underside of a ramp and force them through the ground.
Source: Good Bad Bugs / Mech -
Beneath the Earth: The Kingdom of Seen, well hidden beneath the ground, is a gateway between Overside and Underside, so can be considered a double example.
Source: Webcomic / Rice Boy -
Helicarrier can't be repaired in time to prevent it from crashing, a scientist tries to cushion it by reversing polarity on the underside tractor beams, turning them into repulsor beams which push against the ground rather than pull from it.
Source: Reverse Polarity
Cite this Source
Underside and Ground. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/ground/underside
Ground & Underside. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/ground/underside>.
Underside or Ground. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/ground/underside.
Google Ngram Viewer shows how "ground" and "underside" have occurred on timeline