adjective

 

surface having a regular surface that has no holes or lumps in it

soft, smooth skin

 

substance A substance that is smooth has no lumps in it.

Mix the butter and sugar together until smooth.

 

movement happening without any sudden movements or changes

The plane made a smooth landing.

 

process happening without problems or difficulties

Her job is to help students make a smooth transition from high school to college.

 

person too polite and confident in a way that people do not trust

a smooth salesman

 

verb

 

to move your hands across something in order to make it flat

He straightened his tie and smoothed down his hair.