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

Residents trapped in homes In Sedona, longtime resident Michelle Grimm worried about her community after viewing the rushing waters of Oak Creek rising perilously close to the underside of a pedestrian bridge near the center of town. — Philip Marcelo, Los Angeles Times, 1 Nov. 2026

The undersides of the leaves tend to have a pink or magenta hue with variegation more obvious at night when the leaves fold before reopening during the day. — Lauren David, Better Homes & Gardens, 25 Oct. 2026

Only the lengthwise, or warp, yarns are dyed, while the crosswise, or weft, yarns remain undyed, giving denim its characteristic blue face and lighter underside. — Britannica Editors, Encyclopedia Britannica, 23 Oct. 2026

This is because spiders seek out dark, damp, undisturbed places like the underside of a rock or rotting wood. — Sarah Everett, The Spruce, 23 Oct. 2026