平稳的
顺利的
安详的（smooth的最高级）

Smooth \Smooth\ (sm[=oo][th]), a. [Compar. {Smoother}
(sm[=oo][th]"[~e]r); superl. {Smoothest}.] [OE. smothe,
smethe, AS. sm[=e][eth]e, sm[oe][eth]e, where [=e], [oe],
come from an older [=o]; cf. LG. sm["o]de, sm["o]e,
sm["o]dig; of uncertain origin.]
1. Having an even surface, or a surface so even that no
roughness or points can be perceived by the touch; not
rough; as, smooth glass; smooth porcelain. --Chaucer.

The outlines must be smooth, imperceptible to the
touch, and even, without eminence or cavities.
--Dryden.

2. Evenly spread or arranged; sleek; as, smooth hair.

3. Gently flowing; moving equably; not ruffled or obstructed;
as, a smooth stream.

4. Flowing or uttered without check, obstruction, or
hesitation; not harsh; voluble; even; fluent.

The only smooth poet of those times. --Milton.

Waller was smooth; but Dryden taught to join
The varying verse, the full-resounding line. --Pope.

When sage Minerva rose,
From her sweet lips smooth elocution flows. --Gay.

5. Bland; mild; smoothing; fattering.

This smooth discourse and mild behavior oft
Conceal a traitor. --Addison.

6. (Mech. & Physics) Causing no resistance to a body sliding
along its surface; frictionless.

Note: Smooth is often used in the formation of
self-explaining compounds; as, smooth-bodied,
smooth-browed, smooth-combed, smooth-faced,
smooth-finished, smooth-gliding, smooth-grained,
smooth-leaved, smooth-sliding, smooth-speaking,
smooth-woven, and the like.

Syn: Even; plain; level; flat; polished; glossy; sleek; soft;
bland; mild; soothing; voluble; flattering; adulatory;
deceptive.