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

Make small cuts through the main thick veins on the underside of the leaf, about a quarter of the way from the petiole (leaf stem). — Derek Carwood, Better Homes & Gardens, 27 Sep. 2026

Focus on the undersides of the leaves since aphids often hide out in those crevices. — Jane Kim, The Spruce, 26 Sep. 2026

Fabric content and care labels work for clothing, but furniture and decor often have maker’s stamps, labels, or engravings on the underside or back. — Symiah Dorsey, Southern Living, 26 Sep. 2026

According to images shared by jeweler Antinori di Sanpietro with Tatler, the underside of the setting shows a geometric motif inspired by the Piazza del Campidoglio in Rome. — Bailey Bujnosek, InStyle, 20 Sep. 2026