refined.

Precise, freed from imprecision Sagacious, sometimes (derogatory) oversubtle or feigning sagacity.

Precise, freed from imprecision Subtle, scrupulous, carefully thought out.

The argument, while not persuasive, is quite refined.

Precise, freed from imprecision Developed, improved.

The curriculum has been carefully refined to meet the needs of foreign students.

Cultured, freed from vulgarity Elevated and polished.

In the British Isles, Oxbridge is considered refined; Geordie somewhat less so.

Cultured, freed from vulgarity Elegant, sometimes (derogatory) affected, prissy, or bloodless.

Don Draper was a man of refined tastes.

Purified, reduced in or freed from impurities Highly-processed and pure.

Under current guidelines, refined sugar must be at least five times purer than its raw counterpart.

Purified, reduced in or freed from impurities Free of dross or alloy.

The Temple at Jerusalem preferred Tyrian shekels, since even with Ba'al's portrait they bore highly refined silver.

Purified, reduced in or freed from impurities Morally pure.

Dealing in a refined product such as sugar or petroleum.

The refined form of a commodity, as opposed to its raw or generic form.

We're still purchasing copper ore, but the market for refined is weaker.

simple past and past participle of refine

The raw petroleum was refined into kerosene.