The definition for retroactive is "effective as of a prior time or condition." Used in a sentence: The retroactive law made even past infractions punishable. The definition for derivative is "lacking originality.", the definition for avian is "Relating to birds.", and the definition for rancorous is "Marked by deep ill–will."

The definition for melodious is "Having a pleasing melody." Used in a sentence: The melodious sounds of the symphony soothed Tim after his trying day. The definition for commemorate is "to mark by a ceremony.", the definition for grandiose is "With an affectation of grandeur.", and the definition for procrastinate is "To put off intentionally."

The definition for pantomime is "Telling a story through gestures." Used in a sentence: The jealous actress called her understudy's performance a ridiculous pantomime. The definition for aesthete is "person having or affecting sensitivity to beauty.", the definition for scapegoat is "Someone who bears the blame for others.", and the definition for euphoria is "Feeling of great happiness."

The definition for abate is "Become less in amount or intensity." Used in a sentence: Just when it seemed the rain would never stop, the storm suddenly began to abate. The definition for fraud is "trick.", the definition for fragile is "Delicate.", and the definition for abate is "Become less in amount or intensity."

The definition for stifle is "To repress or discourage." Used in a sentence: Amy tried ineffectively to stifle her giggles after she read Susan's note in class. The definition for serenity is "calmness.", the definition for celebrated is "Widely known, respected.", and the definition for facade is "false or superficial appearance."