as in underside
the side or part facing downward from something
the bird's underparts were white
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Recent Examples of underpart
Calliope hummers have glossy green on the back and crown with white underparts.
—
Joan Morris, The Mercury News, 26 July 2019
The adult brown pelican has gray underparts with brown hues, black-brown belly, yellow head and dark brown neck, silver-gray back and wings, with black feathers at the tips.
—Ernie Cowan, San Diego Union-Tribune, 13 June 2019
Joan Morris, The Mercury News, 26 July 2019
The adult brown pelican has gray underparts with brown hues, black-brown belly, yellow head and dark brown neck, silver-gray back and wings, with black feathers at the tips.
—Ernie Cowan, San Diego Union-Tribune, 13 June 2019
Recent Examples of Synonyms for underpart
Noun
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Like the official Pro Controller, this features programmable buttons on the underside of the hand grips.—
Matt Kamen,
Wired News,
20 July 2025
-
Lawson points at what looks like nothing more than a pale speck on the underside of a leaf.—
Joseph States,
Chicago Tribune,
17 July 2025
Noun
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Here's which other states are at the bottom of the list.—
Allison Kiehl,
Nashville Tennessean,
15 July 2025
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The attorney said that, after police arrived, there was a low-speed collision, Byron Jackson and an officer ended up at the bottom of a ravine and the South Carolina resident was handcuffed.—
Tesfaye Negussie,
ABC News,
15 July 2025
Cite this Entry
“Underpart.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underpart. Accessed 30 Jul. 2025.
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