The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for ploy is "a contrived plan.", the definition for perception is "Capacity for seeing or understanding.", and the definition for melee is "A tumultuous fight among several people."

The definition for apathetic is "Showing little or no emotion." Used in a sentence: Carmine was concerned about his usually cheerful brother's apathetic attitude. The definition for buffer is "protective barrier.", the definition for composed is "Calm.", and the definition for commemorate is "To mark by a ceremony."

The definition for compulsion is "An irresistible impulse." Used in a sentence: Tamar, a shoe fanatic, could not resist the compulsion to buy the shiny red boots. The definition for insolence is "boldness or rudeness.", the definition for rhapsody is "State of great happiness.", and the definition for avian is "Relating to birds."

The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for accentuate is "to emphasize.", the definition for corroborate is "To support with evidence.", and the definition for egotist is "Self–important person."

The definition for cunning is "Showing clever insight." Used in a sentence: The general devised a cunning strategy to outfox the enemy. The definition for curtail is "to make less.", the definition for interminable is "Never ending, or seemingly endless.", and the definition for extant is "Currently existing."