nonsmooth
Lacking even texture
Not smooth; having irregularities, roughness, or discontinuities.
The word appears most often in technical contexts—mathematics describes nonsmooth functions that lack continuous derivatives, while engineering addresses nonsmooth surfaces or materials.
Outside specialized use, *uneven* or *rough* typically serve better: The nonsmooth texture made the fabric difficult to work with.
Uneven in surface
ridged · grooved · furrowed · pitted · dimpled · wrinkled · crinkled · knobbly
Deviating from normal patterns
- bumpyUneven in surface
- lumpyHaving irregular bumps
- undulatingMoving in waves
- rollingTurning over repeatedly
hilly · wavy · rippled · asymmetrical · potholed · cratered · rutted · warped
rough
Uneven in surface
grainy · ridged · grooved · furrowed · pitted · dimpled · wrinkled · crinkled · knobbly · scabrous
irregular
Deviating from normal patterns
- bumpyUneven in surface
- lumpyHaving irregular bumps
- undulatingMoving in waves
rolling · hilly · wavy · rippled · asymmetrical · potholed · cratered · rutted · warped · unequal
sandpaper
Abrasive-coated finishing material
- gritDetermination or abrasive particles
- emeryGranular polishing mineral
- pumiceLightweight volcanic abrasive
rasp · file · grindstone · whetstone · coarse · scour · scrub · exfoliate · buff · polish
serrated
Having toothlike projections
- sawtoothTriangular repeating edge pattern
- spikyHaving sharp projections
- barbedHaving sharp projections
prickly · toothed · notched · ragged · torn · shredded · lacerated · crenulated · zigzag · snagged
nonsmoothsmooth
Without roughness or difficulty
differentiable · regular · analytic · well-behaved · continuous
smooth, smoothly, smoothness, smoothing, smoothest, smoother, smoothen, smoothes, unsmooth