un·​der·​side | \ ˈən-dər-ˌsīd How to pronounce underside (audio) , ˌən-dər-ˈsīd\

Definition of underside

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

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Synonyms & Antonyms for underside


bottom, underbelly, underbody, underpart, undersurface


face, top

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Examples of underside in a Sentence

the underside of the table The book explores the underside of human nature.

Recent Examples on the Web

Lovato recently paid a visit to tattoo artist Daniel Winter to add a tiny tattoo to the underside of her left ring finger. Samantha Sasso, refinery29.com, "The Message Behind Demi Lovato's New Finger Tattoo Is So Important," 30 June 2019 While creating the bespoke conflict-free diamond eternity band, Harry paid tribute by having Schwartz add birthstones for Meghan, Archie, and himself on the underside of the delicate piece. Omid Scobie, Harper's BAZAAR, "The Moving Story Behind Duchess Meghan's Stunning Lorraine Schwartz Eternity Ring," 29 June 2019 The camera was found when an employee was cleaning the restroom, where it was attached to the underside of a toilet lid. Micah Walker, Detroit Free Press, "Hidden camera found inside Starbucks bathroom in Allen Park," 4 June 2019 The Teres major muscle is on the underside of the upper arm, between the shoulder and elbow. Marc Bona, cleveland.com, "Indians’ Mike Clevinger looks strong in rehab start in Akron (video)," 11 June 2019 The underside and fan vents get hot, but the palm rest remains cool. Stefan Etienne, The Verge, "Asus Strix Scar II review: lights, camo, action," 17 July 2018 There is a lot of meat on those birds, including the underside and back. Judy Walker, NOLA.com, "Grocery shop on Wednesdays, and more money-saving food secrets," 6 Feb. 2018 There were dragonflies, birds with white diamonds on the underside of their black wings, and endlessly chirping crickets. Sunset, "The Ultimate Venue for Your Next Family Vacay? A Houseboat," 22 Jan. 2018 The primary symptom is a white to purple, downy growth, usually on the undersides of leaves and along stems, which turns black with age. The Editors Of Organic Life, Good Housekeeping, "Grow Healthy Food By Identifying + Treating These Common Plant Diseases," 21 July 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underside.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of underside

1660, in the meaning defined at sense 1

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Statistics for underside

Last Updated

10 Jul 2019

Look-up Popularity

Time Traveler for underside

The first known use of underside was in 1660

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More Definitions for underside



English Language Learners Definition of underside

: the bottom side or part of something
: a part of life, a city, etc., that is hidden and usually unpleasant


un·​der·​side | \ ˈən-dər-ˌsīd How to pronounce underside (audio) \

Kids Definition of underside

: the side or surface lying underneath the underside of a leaf

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More from Merriam-Webster on underside

Rhyming Dictionary: Words that rhyme with underside

Thesaurus: All synonyms and antonyms for underside

Spanish Central: Translation of underside

Nglish: Translation of underside for Spanish Speakers

Comments on underside

What made you want to look up underside? Please tell us where you read or heard it (including the quote, if possible).


an act or instance of editing or removing

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