Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “underside”

underside

noun [C usually singular] uk   /ˈʌn.də.saɪd/ us    /-dɚ-/
the side of something that is usually nearest the ground: The car had turned over in the ditch, and its underside was covered in oil and mud.Surfaces of objectsEdges and extremities of objects
(Definition of underside from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of underside?
Add Cambridge dictionaries to your browser to your website

Definitions of “underside” in other dictionaries

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More