UNDERMOST Synonyms: 32 Similar and Opposite Words

undermost

adjective

ˈən-dər-ˌmōst

Definition of undermost

as in lower

of, relating to, or located at the bottom the undermost layer of the mattress filling should provide firm back support

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Example Sentences

Recent Examples of Synonyms for undermost

Adjective

Despite those lower court rulings, the practice has continued nationally, said Gregory Chen, the senior director of government relations for the Immigration Lawyers Association.

— Seth Klamann, Denver Post, 3 Sep. 2025
And ultimately, the Supreme Court overruled those lower court rulings and did declare the embryos as children qualifying under the wrongful death statute.

— Dana Taylor, USA TODAY, 1 Mar. 2024

Definition of lower

Adjective

On the bottom edge, right next to the USB-C port (which charges the Power Keyboard and passes battery power to your phone), sits a power button that doubles as a Bluetooth pairing toggle.

— Kimberly Gedeon, PC Magazine, 1 Oct. 2026
The bottom two levels were much fuller than the upper deck, but many seats in the lower two decks were also empty.

— ABC News, ABC News, 29 Sep. 2026

Definition of bottom

Adjective

Jaguar also built a car with long, low proportions that are unique in its segment and required a new platform.

— Erik Shilling, Robb Report, 7 Oct. 2026
Set the scene For a hotel with some of the priciest rooms in the city, Capella Bangkok feels decidedly low key.

— Condé Nast, Condé Nast Traveler, 7 Oct. 2026

Definition of low

Adjective

But others have argued that the helium-3 could instead be coming from somewhere deep and stable in the lowermost mantle.

— Quanta Magazine, Quanta Magazine, 4 Aug. 2025
In the 1920s, a surgeon named Frederick Barrington, of University College London, went looking for the on-off switch in the brainstem, the lowermost part of the brain that connects with the spinal cord.

— Emily Underwood, Smithsonian Magazine, 5 June 2024

Definition of lowermost

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Browse Nearby Words

undermining

undermost

underneath

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“Undermost.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undermost. Accessed 9 Oct. 2026.

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Synonyms of undermost

adjective

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