ungrooved

1 7.2

An object with a smooth surface and no long narrow cuts

adjective
/ʌnˈɡruːvd/

Specialized

: liso

The ungrooved driveway allows for a smooth ride without bumps.

Examples

The surface of the table is ungrooved, making it easy to clean.
Once, he'd lain on the floor, getting chewing gum stuck to the back of his blazer, and his reward had been the glimpse of a smooth, hairless, ungrooved mound.

Fiction book (1991)
For the project, we decided to use an ungrooved panel for a sleek finish.

Synonyms

unscored

vsungrooved

1 5.0

Having a smooth surface without cuts or marks

only excludes grooves or channels rather than all surface marks

unnotched

vsungrooved

7.5

A smooth surface or edge with no notches

focuses on absence of grooves or channels rather than notches

unmilled

vsungrooved

Specialized

8.7

A smooth metal edge without ridges, like some old coins

refers to lack of grooves or channels on a surface, not just edges

How Grooved

fluted

4 6.5

grooved

1 6.0

ridged

3 5.0

ungrooved

Specialized

1 7.2

smooth

224 1.0

Surface Forms

ungrooved positive

Morphology

ungrooved = grooved (transparent) = un + groove + ed

The negative prefix 'un-' productively negates the adjective 'grooved', yielding the straightforward opposite meaning.

Etymology

Ungrooved is made from the prefix un- meaning 'not' and the word groove, which means 'a long, narrow cut or channel'. So ungrooved simply means 'not having grooves', which is why an ungrooved surface is flat and can feel slippery or hard to grip.