underside
noun
un·der·side
ˈən-dər-ˌsīd 
ˌən-dər-ˈsīd
1
: the side or surface lying underneath
2
: a side usually hidden from sight
specifically
: the more unpleasant or reprehensible side
the underside of politics
Examples of underside in a Sentence
the underside of the table
The book explores the underside of human nature.
Recent Examples on the Web
Symptoms are most commonly observed on the upper surface of leaves, but also affect the underside of foliage and other plant parts.
—
Kim Toscano, Southern Living, 31 Dec. 2025
In the video, the builder explains that the entire underside will eventually be covered in copper tubing once the plumbing is complete, giving the system an even more industrial appearance.
—Kaif Shaikh, Interesting Engineering, 30 Dec. 2025
In its present form, the technology utilizes two spectrometers to perform near-infrared and mid-infrared scans of the top surfaces and undersides of leaves immediately adjacent to the fruits.
—New Atlas, 20 Dec. 2025
Clasp the underside of your thighs with both hands, hinge back, and lift your feet until your lower legs are parallel to the floor.
—Health Editorial Team, Health, 20 Dec. 2025
See All Example Sentences for underside
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Kim Toscano, Southern Living, 31 Dec. 2025
In the video, the builder explains that the entire underside will eventually be covered in copper tubing once the plumbing is complete, giving the system an even more industrial appearance.
—Kaif Shaikh, Interesting Engineering, 30 Dec. 2025
In its present form, the technology utilizes two spectrometers to perform near-infrared and mid-infrared scans of the top surfaces and undersides of leaves immediately adjacent to the fruits.
—New Atlas, 20 Dec. 2025
Clasp the underside of your thighs with both hands, hinge back, and lift your feet until your lower legs are parallel to the floor.
—Health Editorial Team, Health, 20 Dec. 2025
See All Example Sentences for underside
Cite this Entry
“Underside.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underside. Accessed 4 Jan. 2026.
Copy CitationKids Definition
underside
noun
un·der·side
ˈən-dər-ˌsīd
ˌən-dər-ˈsīd
: the side or part lying underneath
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