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

Synonyms

• bottom

Examples of underside in a Sentence

the underside of the table

The book explores the underside of human nature.

Recent Examples on the Web

And use a disinfectant to clean the underside of your tables and bar tops, to avoid dust, grime, and other nasty germs from touching your legs and clothes. —Daley Quinn, Southern Living, 21 Aug. 2025

Everything had to be angled down because the camera sees the underside of the table. —Destiny Jackson, Deadline, 13 Aug. 2025

Instead, use a Bug Blaster hose end sprayer to blast the upper and undersides of the leaves with water and blow the critters away. —Nan Sterman, San Diego Union-Tribune, 2 Aug. 2025

The rest of its underside is white, researchers said, while its back is slightly blue-gray in color with bands of white and brown coloring. —Irene Wright, Miami Herald, 30 July 2025

Word History

First Known Use

1660, in the meaning defined at sense 1

Rhymes for underside

• actinide
• aldehyde
• alkoxide
• alongside
• amplified
• arsenide
• beautified
• biocide
• butoxide
• calcified
• ceramide
• certified

Kids Definition

underside

noun

un·​der·​side ˈən-dər-ˌsīd 

ˌən-dər-ˈsīd

: the side or part lying underneath