The definition for adversary is "One who opposes or resists." Used in a sentence: Franklin hoped to defeat his adversary in the afternoon's tennis match. The definition for composed is "calm.", the definition for beneficial is "Helpful.", and the definition for interminable is "Never ending, or seemingly endless."

The definition for elate is "To fill with joy." Used in a sentence: It elated Margaret to be awarded first place in the science fair. The definition for preclude is "to rule out in advance.", the definition for regale is "To amuse.", and the definition for rhapsody is "State of great happiness."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for condone is "to treat as acceptable.", the definition for commemorate is "To mark by a ceremony.", and the definition for dubious is "Questionable."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for immoderate is "beyond usual or proper limits.", the definition for regale is "To amuse.", and the definition for benefactor is "One who offers financial help."

The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for apathetic is "showing little or no emotion.", the definition for cunning is "Showing clever insight.", and the definition for gargantuan is "Gigantic."