This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The condition of being smooth.

n. Quality or state of being smooth.

n. The state or character of being smooth, in any sense.

n. the quality of having a level and even surface

n. the quality of being bland and gracious or ingratiating in manner

n. the quality of being free from errors or interruptions

n. a texture without roughness; smooth to the touch

n. powerful and effective language

"It's a pilot, and I wouldn't say the nib is any worse in smoothness than my refillable Pilot fountain pens, though it's lighter."

roughness   

evenness    invariability    graciousness    effortlessness    style    expressive style   

smooth   

softness    lightness    clearness    whiteness    richness    regularity    quickness    solidity    fineness    freshness