refined

1. Free from coarseness or vulgarity; polite.
2. Free of impurities; purified.
3. Precise to a fine degree.

adjective

1. Characterized by discriminating taste and broad knowledge as a result of development or education: civilized, cultivated, cultured, educated, polished, urbane, well-bred. See culture/nature.
2. So slight as to be difficult to notice or appreciate: delicate, fine¹, finespun, nice, subtle. See big/small/amount.

Definition: cleaned
Antonyms: corrupt, crude, dirtied, polluted

adj

Definition: cultured, civilized
Antonyms: boorish, coarse, crude, uncivilized, uncultured, unrefined, unsophisticated

The adjective has 6 meanings:

Meaning #1: used of persons and their behavior; cultivated and genteel
  Antonym: unrefined (meaning #2)

Meaning #2: freed from impurities by processing
  Synonym: processed
  Antonym: unrefined (meaning #1)

Meaning #3: showing a high degree of refinement and the assurance that comes from wide social experience
  Synonyms: polished, svelte, urbane

Meaning #4: made pure
  Synonyms: purified, sublimate

Meaning #5: suggesting taste, ease, and wealth
  Synonyms: elegant, graceful

Meaning #6: free from what is tawdry or unbecoming
  Synonyms: neat, tasteful