undersurface
1 of 2noun
un·der·sur·face ˈən-dər-ˌsər-fəs 
: underside
undersurface
2 of 2adjective
un·der·sur·face ˌən-dər-ˈsər-fəs
: existing or moving below the surface
Synonyms
Noun
- bottom
- underbelly
- underbody
- underpart
- underside
See all Synonyms & Antonyms 
Example Sentences
Noun painted the undersurface of the plane blue
Recent Examples on the Web
New York Times, 26 July 2021 The spots enlarge and are mirrored on the undersurface of the leaf with a white downy growth. The Editors Of Organic Life, Good Housekeeping, 21 July 2015 When the undersurface of the first tablet was revealed, Dr. White got chills. Joanna Klein, New York Times, 7 Mar. 2017
Noun
Scientists observed a beetle walking upside-down on the undersurface of a pool of water. New York Times, 26 July 2021 The spots enlarge and are mirrored on the undersurface of the leaf with a white downy growth. The Editors Of Organic Life, Good Housekeeping, 21 July 2015 When the undersurface of the first tablet was revealed, Dr. White got chills. Joanna Klein, New York Times, 7 Mar. 2017 Word History
First Known Use
Noun
1733, in the meaning defined above
Adjective
circa 1934, in the meaning defined above
undersurface
noun
as in underside
the side or part facing downward from something painted the undersurface of the plane blue Synonyms & Similar Words
Relevance
- underside
- bottom
- underpart
- underbody
- sole
- floor
- underbelly
- foot
- toe
- seat
- belly
- base
- ground
- undercarriage
- underpinning
Antonyms & Near Antonyms
- top
- face
- roof
- apex
- crest
- crown
- height
- peak
- summit
- pinnacle
- meridian
- climax
- head
- acme
- tip
- culmination
- point
- cusp
- zenith
- high-water mark
- tip-top