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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Both tortoises were microchipped and the Egyptian tortoise was said to have a prominent scar on its underside, Indiana State Police said in a press release.—
Meredith Deliso,
ABC News,
28 Oct. 2025
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Use a magnifying glass, and look on the underside of foliage where mites like to hide.—
Arricca Elin SanSone,
Southern Living,
27 Oct. 2025
Noun
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Her statement-making look featured a sleeveless shirt covered in oversize paillettes that bled into blues on the bottom.—
Skyler Caruso,
PEOPLE,
4 Nov. 2025
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As per usual, her shiny blond ends hugged the bottom of her ears, not a long strand in sight.—
Kaleigh Werner,
Footwear News,
4 Nov. 2025
Cite this Entry
“Underpart.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underpart. Accessed 8 Nov. 2025.
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