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
-
Examine the underside of the leaves to identify spots early.—
Emily Hayes,
Martha Stewart,
16 June 2026
-
In images shared by HM Coastguard Canvey, the bluish-gray carcass appears to have scarring along its underside, with no clear indication of its cause of death.—
Moná Thomas,
PEOPLE,
15 June 2026
Noun
-
Tuesday’s game between the Braves and Giants at Truist Park was suspended in the bottom of the second due to unplayable field conditions.—
Chad Bishop,
AJC.com,
17 June 2026
-
That color indicates warm to hot fire, per the scale visible at the bottom of the gif.—
Monisha Ravisetti,
Space.com,
17 June 2026
Cite this Entry
“Underpart.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underpart. Accessed 22 Jun. 2026.
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