Synonyms for smoothen
- even off
- even out
- make equal
- make flat
EXAMPLES FROM THE WEB FOR SMOOTHEN
It was Frontenac's policy to appear to smoothen out the situation.
Lay this smooth upon the Cakes with a Knife, and smoothen it with a feather.
Surface grinding, in which the object is to remove metal or to smoothen surfaces.
So you will start with sound pre-knowledge, which will smoothen the entire course of travel.