Definition

The part or surface that is underneath something; the bottom side of an object.

Example

The underside of the leaf is often a different color than the top side.

Conversation

Did you see the underside of that bridge when we drove over it?

Yeah, it was pretty rusty and looked like it needed repairs.

I wonder how many people notice the underside when they cross it every day.

Probably not many, but it's definitely an important part to pay attention to.

Synonyms & Antonyms

Root Explanation

Underside → It is formed from "under" (from Old English "under", meaning beneath) and "side" (from Old English "side", meaning a surface or aspect). The word "underside" refers to the surface that is beneath or lower than another surface.

Memory Tip

Think of something being 'beneath' ('under') another 'surface' ('side') — that's what underside means.

Visually Confused Words