noun
The quality of a surface that is even and not rough.
The smoothness of the stone made it pleasant to hold.
Common phrases & grammar
the smoothness of the surface · skin smoothness
American English
How to pronounce smoothness
nounB2
SMOOTHnuhs
/ˈsmuð.nəs/
2 syllables · Stress the first syllable.
The quality of a surface that is even and not rough.
Practice out loudMeanings & examples
nounless common
The quality of moving or happening easily, without sudden changes or problems.
Passengers noticed the smoothness of the train's movement.
Common phrases & grammar
smoothness of movement · smoothness of the process