Under and Undermost

Under

Under adjective - Located below or beneath something else.

Undermost and under are semantically related. In some cases you can use "Undermost" instead an adjective "Under".

Undermost

Undermost adjective - Of, relating to, or located at the bottom.
Usage example: the undermost layer of the mattress filling should provide firm back support

Under and undermost are semantically related. You can use "Under" instead an adjective "Undermost".
Cite this Source
Undermost and Under. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/under/undermost
Under & Undermost. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/under/undermost>.
Undermost or Under. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/under/undermost.
Google Ngram Viewer shows how "under" and "undermost" have occurred on timeline