The definition for appalling is "Inspiring dismay or disgust." Used in a sentence: Hector found his roommate's habit of leaving his dirty socks on the floor appalling. The definition for serenity is "calmness.", the definition for supple is "Flexible.", and the definition for ploy is "A contrived plan."

The definition for prune is "To reduce by removing excess." Used in a sentence: The candidate pruned his speech so he would not exceed the time limit. The definition for combustion is "act of burning.", the definition for periodic is "Occurring at regular intervals.", and the definition for recrimination is "A retaliatory accusation."

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 intricate is "having complex and interrelated parts.", the definition for periodic is "Occurring at regular intervals.", and the definition for opportune is "Suitable or convenient."

The definition for gargantuan is "Gigantic." Used in a sentence: The gargantuan monster towered over the ten–story bulding. The definition for commemorate is "to mark by a ceremony.", the definition for pathos is "Sympathetic pity.", and the definition for catastrophic is "Relating to extreme misfortune."

The definition for euphoria is "Feeling of great happiness." Used in a sentence: Cassandra was overcome with euphoria when she met her long–lost sister. The definition for servile is "fearfully submissive.", the definition for archaic is "Characteristic of an earlier time.", and the definition for obnoxious is "Highly offensive."