- 1 completely flat and even, without any lumps, holes or rough areas a lotion to make your skin feel soft and smooth The water was as smooth as glass. a paint that gives a smooth, silky finish Over the years, the stone steps had worn smooth. opposite rough without lumps
- 2 (of a liquid mixture) without any lumps Mix the flour with the milk to form a smooth paste. without problems
- 3 happening or continuing without any problems They are introducing new measures to ensure the smooth running of the business. They could not ensure a smooth transfer of political power. movement
- 4 even and regular, without sudden stops and starts The car's improved suspension gives you a smoother ride. The plane made a smooth landing. She swung herself over the gate in one smooth movement. man
- 5(often disapproving) (of people, especially men, and their behaviour) very polite and pleasant, but in a way that is often not very sincere synonym smarmy I don't like him. He's far too smooth for me. He's something of a smooth operator. drink/taste
- 6pleasant and not bitter This coffee has a smooth, rich taste. voice/music
- 7nice to hear, and without any rough or unpleasant sounds Word Origin Old English smōth, probably of Germanic origin, though no cognates are known. The verb dates from Middle English.Extra examples The project got off to a remarkably smooth start. The steps had been worn smooth by the thousands of passing feet. The surface should be sanded smooth. This cream makes even the roughest hands silky smooth. a fairly smooth transition to democracy her beautifully smooth complexion the deceptively smooth surface of the glacier He’s something of a smooth operator. I don’t like him. He’s far too smooth for me. Try using a lotion to make your skin feel soft and smooth. Use a paint that gives a smooth, silky finish.