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Adjective: yeasty (yeastier,yeastiest)  yees-tee
  1. Of, resembling or containing yeast
    - yeastlike
  2. Marked by spirited enjoyment
    "She made a yeasty Blue Cheese Dressing";
    - zestful, zesty, barmy
  3. Exuberantly creative

Derived forms: yeastiest, yeastier

See also: creative, originative, spirited