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 colossal is "immense, enormous.", the definition for regale is "To amuse.", and the definition for implausible is "Unbelievable."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for implausible is "unbelievable.", the definition for incongruous is "Not harmonious, incompatible.", and the definition for drub is "To defeat decisively."

The definition for heed is "To pay attention to." Used in a sentence: "Heed my advice," the fortuneteller warned Sebastian when he tried to ignore her prophecy. The definition for servile is "fearfully submissive.", the definition for brandish is "To shake or wave menacingly.", and the definition for stern is "Harsh, severe."

The definition for accentuate is "To emphasize." Used in a sentence: Carla used red ribbons to accentuate the coppery tones in her hair. The definition for demeanor is "behavior towards others.", the definition for demean is "To lower status.", and the definition for regurgitate is "To pour out or throw back."

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 prudent is "marked by wisdom, shrewd.", the definition for aesthete is "Person having or affecting sensitivity to beauty.", and the definition for diffident is "Lacking self–confidence."