as in underside
the side or part facing downward from something
painted the undersurface of the plane blue
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Recent Examples of undersurface
Pale green eggs are laid in clusters near the food source with each egg suspended at the end of slender silken threads attached to the undersurface of a leaf.
—
Rita Perwich, San Diego Union-Tribune, 1 July 2023
Scientists observed a beetle walking upside-down on the undersurface of a pool of water.
—New York Times, 26 July 2021
The spots enlarge and are mirrored on the undersurface of the leaf with a white downy growth.
—The Editors Of Organic Life, Good Housekeeping, 21 July 2015
Rita Perwich, San Diego Union-Tribune, 1 July 2023
Scientists observed a beetle walking upside-down on the undersurface of a pool of water.
—New York Times, 26 July 2021
The spots enlarge and are mirrored on the undersurface of the leaf with a white downy growth.
—The Editors Of Organic Life, Good Housekeeping, 21 July 2015
Recent Examples of Synonyms for undersurface
Noun
-
For bonus organization, label the sheet sizes with masking tape on the underside of the shelf above each stack.—
Mary Catherine McAnnally Scott,
Southern Living,
12 Sep. 2025
-
For gaps along soffits (the underside of a roof's overhang), exterior caulk or spray foam designed for outdoor use works well.—
Elizabeth Fogarty,
Better Homes & Gardens,
11 Sep. 2025
Noun
-
Fine arts at the bottom seems to have some rationale to it.—
Erik Sherman,
Forbes.com,
17 Sep. 2025
-
The list of list surveyed is, as ever, at the bottom.—
Literary Hub,
Literary Hub,
16 Sep. 2025
Cite this Entry
“Undersurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undersurface. Accessed 18 Sep. 2025.
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