(1)   (of a body of water) free from disturbance by heavy waves
"A ribbon of sand between the angry sea and the placid bay"
"The quiet waters of a lagoon"
"A lake of tranquil blue water reflecting a tranquil blue sky"
"A smooth channel crossing"
"Scarcely a ripple on the still water"
"Unruffled water"
(2)   Lacking obstructions or difficulties
"The bill's path through the legislature was smooth and orderly"
(3)   Smoothly agreeable and courteous with a degree of sophistication
"He was too politic to quarrel with so important a personage"
"The hostess averted a confrontation between two guests with a diplomatic change of subject"
"The manager pacified the customer with a smooth apology for the error"
"Affable, suave, moderate men...smugly convinced of their respectability" - Ezra Pound
(4)   Smooth and unconstrained in movement
"A long, smooth stride"
"The fluid motion of a cat"
"The liquid grace of a ballerina"
(5)   Having a surface free from roughness or bumps or ridges or irregularities
"Smooth skin"
"A smooth tabletop"
"Smooth fabric"
"A smooth road"
"Water as smooth as a mirror"
(6)   Of motion that runs or flows or proceeds without jolts or turbulence
"A smooth ride"
(7)   Of the margin of a leaf shape; not broken up into teeth
(8)   (music) without breaks between notes; smooth and connected
"A legato passage"


(9)   The act of smoothing
"He gave his hair a quick smooth"


(10)   Make (a surface) shine
"Shine the silver, please"
"Polish my shoes"
(11)   Make smooth or smoother, as if by rubbing
"Smooth the surface of the wood"
(12)   Free from obstructions
"Smooth the way towards peace negotiations"


From , from (later: ).


  1. Having a texture that lacks friction. Not rough.