Synonyms of underside

underside

noun

ˈən-dər-ˌsīd 

as in bottom

the side or part facing downward from something

the underside of the cat's coat is pure white

Synonyms & Similar Words

• bottom
• undersurface
• floor
• seat
• underbelly
• underpart
• foot
• underbody
• belly
• sole
• toe
• base
• ground
• underpinning
• undercarriage

Antonyms & Near Antonyms

• top
• face
• roof
• apex
• crest
• height
• crown
• peak
• pinnacle
• summit
• meridian
• climax
• head
• tip
• culmination
• point
• zenith
• acme
• cusp
• high-water mark
• tip-top

Example Sentences

Recent Examples of underside

Inspect your hibiscus for insects, looking along stems, anywhere there is leaf damage, and on the undersides of leaves. — Andy Wilcox, Better Homes & Gardens, 27 June 2026

Your yearnings whet the underside of her tongue, as familiar as the thrum of her own pulse. — Literary Hub, 25 June 2026

All of which could have made her a comic-book heroine with a haunted underside, if the move had a haunted underside. — Owen Gleiberman, Variety, 24 June 2026

This fungal disease creates orange or rust-colored spots on the underside of fern fronds. — Sj McShane, Martha Stewart, 22 June 2026