adjective, smoother, smoothest.
free from projections or unevenness of surface; not rough:
smooth wood; a smooth road.
generally flat or unruffled, as a calm sea.
free from hairs or a hairy growth:
a smooth cheek.
of uniform consistency; free from lumps, as a batter, sauce, etc.
free from or proceeding without abrupt curves, bends, etc.:
a smooth ride.
allowing or having an even, uninterrupted movement or flow:
easy and uniform, as motion or the working of a machine.
having projections worn away:
a smooth tire casing.
free from hindrances or difficulties:
a smooth day at the office.
noting a metal file having the minimum commercial grade of coarseness for a single-cut file.
undisturbed, tranquil, or equable, as the feelings, temper, etc.; serene:
a smooth disposition.
elegant, easy, or polished:
ingratiatingly polite or suave:
That salesman is a smooth talker.
free from harshness, sharpness, or bite; bland or mellow, as cheese or wine.
not harsh to the ear, as sound:
the smooth music of a ballroom dance band.
Phonetics. without aspiration.
in a smooth manner; smoothly.
verb (used with object)
to make smooth of surface, as by scraping, planing, or pressing.
to remove (projections, ridges, wrinkles, etc.) in making something smooth (often followed by away or out).
to free from difficulties.
to remove (obstacles) from a path (often followed by away).
to make more polished, elegant, or agreeable, as wording or manners.
to tranquilize, calm, or soothe (a person, the feelings, etc.).
Mathematics. to simplify (an expression) by substituting approximate or certain known values for the variables.
act of smoothing:
She adjusted the folds with a smooth of her hand.
something that is smooth; a smooth part or place:
through the rough and the smooth.
smooth over, to make seem less severe, disagreeable, or irreconcilable; allay; mitigate:
He smoothed over my disappointment with kind words.
resting in the same plane; without bends or irregularities
silky to the touch: smooth velvet
lacking roughness of surface; flat
tranquil or unruffled: smooth temper
lacking obstructions or difficulties
suave or persuasive, esp as suggestive of insincerity
(in combination): smooth-tongued
(of the skin) free from hair
of uniform consistency: smooth batter
not erratic; free from jolts: smooth driving
not harsh or astringent: a smooth wine
having all projections worn away: smooth tyres
(maths) (of a curve) differentiable at every point
(phonetics) without preliminary or simultaneous aspiration
gentle to the ear; flowing
(physics) (of a plane, surface, etc) regarded as being frictionless
in a calm or even manner; smoothly
verb (mainly transitive)
(also intransitive) often foll by down. to make or become flattened or without roughness or obstructions
often foll by out or away. to take or rub (away) in order to make smooth: she smoothed out the creases in her dress
to make calm; soothe
to make easier: smooth his path
(electrical engineering) to remove alternating current ripple from the output of a direct current power supply
(obsolete) to make more polished or refined
the smooth part of something
the act of smoothing
(tennis, squash, badminton) the side of a racket on which the binding strings form a continuous line Compare rough (sense 27)
- Smooth as silk
Lacking impediments or obstacles, unhindered, as in The negotiations went smooth as silk. This simile alludes to the slippery quality of silk. [ c. 1900 ]
adjective 1. (of firearms) having a smooth, bore; not rifled. noun 2. a smoothbore gun. noun 1. (modifier) (of a firearm) having an unrifled bore: a smoothbore musket 2. such a firearm
noun 1. a symbol (‘) used in the writing of Greek to indicate that the initial vowel over which it is placed is unaspirated. smooth breathing noun 1. (in Greek) the sign (᾿) placed over an initial vowel, indicating that (in ancient Greek) it was not pronounced with an h Compare rough breathing
noun 1. a breed of short-haired collie with a smooth, thick coat.