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

But Beaty argued that the underside of the roof eaves are 20 feet above the scaffolding and that scaffolding hasn’t been erected around the rest of the marble building to protect it or examine other parts of the roof. — Bart Jansen, USA Today, 21 Aug. 2026

An intoxicating spice rub — salt, pepper, cumin, garlic and herbs — permeates everything, from the bronze skin shielding succulent white meat to the livery underside. — Warren Rojas, Washington Post, 19 Aug. 2026

Concentric circles are stitched onto each side of the collar, and both the tongue and underside of the netting appear to be rendered in a reflective 3M material. — Ian Servantes, Footwear News, 18 Aug. 2026

The best testing locations include the underside of the base, the inside of a flap, the back of a strap, and a low section near a seam. — Olivia McIntosh, Martha Stewart, 17 Aug. 2026