bumpinessn.
/ˈbʌmpɪnᵻs/, U.S. /ˈbəmpinᵻs/ The quality or condition of being bumpy (in various senses).
ΘΚΠ
the world > space > shape > unevenness > projection or prominence > protuberance or rounded projection > [noun] > state of having bumps or lumps
lumpiness1805
bumpiness1817
humpiness1888
1817 Edinb. Monthly Mag. 1 38/1 A modification in the shape or bumpiness of its [sc. the heart's] apex.
1886 Bicycling News 17 Sept. 748/2 Its bumpiness excelled any other wood-pavement bumpiness in London.
1929 Aeronautics Aug. 23/1 The cauliflower crests of ordinary cumulus clouds and particularly of the towering thunderheads reveal bumpiness in that vertically turbulent air.
1982 N.Y. Times 30 Nov. d1/3 Market participants say that changes in the nature of the markets..have effectively paved the way for the current bumpiness.
2015 Southland (N.Z.) Times 7 Oct. 3 She used a plastic serrated knife to create the bumpiness of the tree bark.
This entry has been updated (OED Third Edition, September 2018; most recently modified version published online December 2021).
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n.1817