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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With pouches, users often remove them quickly and discreetly, and the nearest place to discard them becomes a golf course, the underside of a bar table, or the sidewalk.—
Pilar Melendez,
NBC news,
18 Mar. 2026
-
Wipe The Microwave Clean Use a cloth dampened with warm, soapy water to clean the underside of your microwave.—
Brandee Gruener,
Southern Living,
15 Mar. 2026
Noun
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The duel didn’t disappoint, as Langford and the Eagles broke a 2-2 deadlock, punching across a pair of runs in the bottom of the sixth to emerge with a 4-2 triumph over the Falcons.—
Mike Waters,
Fort Worth Star-Telegram,
25 Mar. 2026
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And at the bottom of it was Tessie.—
Juli McDonald,
CBS News,
25 Mar. 2026
Cite this Entry
“Underpart.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underpart. Accessed 27 Mar. 2026.
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