fineness or elegance of feeling, taste, manners, language, etc.

an instance of refined feeling, manners, etc.

the act or process of refining.

the quality or state of being refined.

a subtle point or distinction.

subtle reasoning.

an improved, higher, or extreme form of something

a refinement of the old system.

Mathematics . a set whose elements include the elements of a given set.

noun

corruption , dirtying , pollution , bad manners , crudeness , rudeness , barbarity , coarseness , crudity , philistinism , vulgarity

noun

clarification , cleaning , depuration , detersion , distillation , draining , filtering , processing , purification , rarefaction , rectification , affability , civility , courtesy , courtliness , delicacy , dignity , discrimination , elegance , enlightenment , erudition , fastidiousness , fineness , fine point , finesse , fine tuning , finish , gentility , gentleness , good breeding , good manners , grace , graciousness , knowledge , lore , nicety , nuance , polish , politeness , politesse , precision , sophistication , style , suavity , subtlety , tact , taste , urbanity , quality , civilization , cultivation , selectiveness , selectivity , culture , sublimation , subtility , tenuity