Meaning of SMOOTH in English

I. ˈsmüth adjective

Etymology: Middle English smothe, from Old English smōth; akin to Old Saxon smōthi smooth

Date: before 12th century



(1) : having a continuous even surface

(2) of a curve : being the representation of a function with a continuous first derivative

(3) : having or being a short even coat of hair

a smooth collie

— compare rough , wirehaired

b. : being without hair

c. : glabrous

a smooth leaf

d. : causing no resistance to sliding

2. : free from difficulties or impediments

the smooth course of his life

3. : even and uninterrupted in flow or flight

4. : excessively and often artfully suave : ingratiating

a smooth operator


a. : serene , equable

a smooth disposition

b. : amiable , courteous


a. : not sharp or harsh

a smooth sherry

b. : free from lumps

Synonyms: see level , easy , suave

• smooth adverb

• smooth·ly adverb

• smooth·ness noun

II. verb

( smoothed ; smooth·ing ; smooths also smoothes )

Date: 15th century

transitive verb

1. : to make smooth


a. : to free from what is harsh or disagreeable : polish

smooth ed out his style

b. : soothe

3. : to minimize (as a fault) especially in order to allay anger or ill will

his main job is to smooth over the friction that so often arises — Brian Crozier

4. : to free from obstruction or difficulty

conciliation smooth ed the way to an agreement


a. : to press flat

smooth ed down the folds of her dress

b. : to remove expression from (one's face) : compose

6. : to cause to lie evenly and in order : preen

a bird smooth ing its feathers

7. : to free (as a graph or data) from irregularities

intransitive verb

: to become smooth

• smooth·er noun

III. noun

Date: 15th century

1. : a smooth part

2. : the act of smoothing

3. : a smoothing implement

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.