underside

American  

[uhn-der-sahyd] / ˈʌn dərˌsaɪd /

noun

1. an under or lower side.

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underside British  

/ ˈʌndəˌsaɪd /

noun

1. the bottom or lower surface

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Etymology

Origin of underside

First recorded in 1670–80; under- + side ¹

Example Sentences

In the distance, thick clouds, their undersides an angry shade of dark, are swallowing up the blue sky, and the breeze carries the humid scent of the coming rain.

From Literature

It seemed, at first, to be the cushiony underside of a mushroom.

From Literature

Flames wrapped around it, curling from the top to its underside, then going higher and filling the air with acrid, black smoke.

From Literature

He amused himself watching one stately older man examine the underside of the table, find nothing, and leave that night sure “that these rappings were veritable messages from beyond the grave.”

From Literature

It was all a stimulating change from opera-house productions, which often lean on 18th-century elegance instead of exploring the seamy underside and corruption of the demimonde that is at the heart of the piece.

From The Wall Street Journal