The definition for civility is "Politeness." Used in a sentence: The usually unruly Thomas acted with great civility when his favorite uncle visited. The definition for corrosive is "bitingly sarcastic.", the definition for cunning is "Showing clever insight.", and the definition for demeanor is "Behavior towards others."

The definition for appraise is "To evaluate the worth of." Used in a sentence: Simone, an expert in African sculpture, was asked to appraise the ambassador's collection of masks. The definition for demean is "to lower status.", the definition for flaw is "An imperfection.", and the definition for buffoonery is "Foolish behavior."

The definition for commemorate is "To mark by a ceremony." Used in a sentence: Each year, the Franklins commemorate their anniversary by visiting the site of their first date. The definition for plaudits is "enthusiastic approval.", the definition for comparable is "Similar, equivalent.", and the definition for demean is "To lower status."

The definition for ecstatic is "Overwhelmingly emotional." Used in a sentence: They were ecstatic when their team won the championship game in the last second. The definition for revoke is "to cancel by taking back.", the definition for archaic is "Characteristic of an earlier time.", and the definition for belated is "Past the normal or proper time."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for extenuating is "partially excusing.", the definition for disdain is "Feeling of contempt.", and the definition for abate is "Become less in amount or intensity."