as in bottom
the side or part facing downward from something
the underside of the cat's coat is pure white
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of underside
The soft flannel top and plush faux shearling fleece underside provide excellent heat retention for serious coziness.
—
Jacquelyn McGilvray, PEOPLE, 22 Jan. 2026
On the underside of its cap are white gills and spores.
—Karen Garcia, Los Angeles Times, 17 Jan. 2026
Metal panels in the underside of the roof can help reflect the noise coming from the fans underneath.
—Beren Cross, New York Times, 10 Jan. 2026
The pad acts as a base for the carpet and reduces the amount of friction on the underside of rugs, preventing the possibility of wear and tear.
—Bestreviews, Chicago Tribune, 9 Jan. 2026
See All Example Sentences for underside
Jacquelyn McGilvray, PEOPLE, 22 Jan. 2026
On the underside of its cap are white gills and spores.
—Karen Garcia, Los Angeles Times, 17 Jan. 2026
Metal panels in the underside of the roof can help reflect the noise coming from the fans underneath.
—Beren Cross, New York Times, 10 Jan. 2026
The pad acts as a base for the carpet and reduces the amount of friction on the underside of rugs, preventing the possibility of wear and tear.
—Bestreviews, Chicago Tribune, 9 Jan. 2026
See All Example Sentences for underside
Recent Examples of Synonyms for underside
bottom
Noun
-
Early in the conversation, Louis Walsh's hand moves from across the top of the couch behind Mel B to her bottom.—
Angela Andaloro,
PEOPLE,
28 Jan. 2026
-
Black shimmering sequins featured around the neckline and at the cuffs of the sleeves and at the bottom of the top, as well.—
Julia Teti,
Footwear News,
28 Jan. 2026
Cite this Entry
“Underside.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underside. Accessed 1 Feb. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
