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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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

Additionally, the facility had 130 rodent droppings throughout the facility including among debris underneath the fish tank, on the bottom shelf of the cart and rodent urine on the floor in the back upstairs room.

— Sacbee.com, Sacbee.com, 16 Oct. 2026
The bottom-barrel sentiment also reflects a buildup of workers having to endure six years filled with crises, including a global pandemic, Daniel Zhao, chief economist at Glassdoor said at the time of the report’s release in late September.

— Alicia Wallace, CNN Money, 16 Oct. 2026

Definition of bottom

Adjective

Budgets have tightened and commissioners have retreated to the familiar — backing low-cost dramas and safe-bet crime formats.

— Scott Roxborough, HollywoodReporter, 14 Oct. 2026
However, the 98,701 figure is the lowest since 1967, when 94,778 arrests were made nationwide, according to Border Patrol data.

— Anna Giaritelli, The Washington Examiner, 14 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 19 Oct. 2026.

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Synonyms of undermost

adjective

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