as in bottom
the side or part facing downward from something
the underside of the cat's coat is pure white
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Recent Examples of underside
Surprisingly, the underside of the staircase’s base is one of their favorite nap locations, despite the tromping of customers and staff up and down.
—
Literary Hub, 10 Apr. 2026
His first goal for the club arrived the following week in emphatic fashion, turning away from pressure neatly before cannoning this left-footed shot off the underside of the bar.
—Thom Harris, New York Times, 7 Apr. 2026
Instead, females appear with golden-green coloring with a white underside, according to All About Birds.
—Lucia Cheng, Des Moines Register, 2 Apr. 2026
To achieve their audacious goals, the fish use hook-like growths on the undersides of both their pectoral and pelvic fins to push themselves upward.
—Andrew Paul, Popular Science, 2 Apr. 2026
See All Example Sentences for underside
Literary Hub, 10 Apr. 2026
His first goal for the club arrived the following week in emphatic fashion, turning away from pressure neatly before cannoning this left-footed shot off the underside of the bar.
—Thom Harris, New York Times, 7 Apr. 2026
Instead, females appear with golden-green coloring with a white underside, according to All About Birds.
—Lucia Cheng, Des Moines Register, 2 Apr. 2026
To achieve their audacious goals, the fish use hook-like growths on the undersides of both their pectoral and pelvic fins to push themselves upward.
—Andrew Paul, Popular Science, 2 Apr. 2026
See All Example Sentences for underside
Recent Examples of Synonyms for underside
bottom
Noun
-
With the Yankees down a run in the bottom of the ninth, Jose Caballero lined a two-RBI walkoff double into left-center field off of Jordan Romano to give the Bombers a comeback 5-4 win.—
James O'Connell,
New York Daily News,
16 Apr. 2026
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The cozy fleece bottoms have a flattering straight-leg fit and feature subtle side piping, giving them a fashionable, sporty effect.—
Melony Forcier,
PEOPLE,
15 Apr. 2026
Cite this Entry
“Underside.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underside. Accessed 22 Apr. 2026.
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