The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for lurid is "causing horror, shocking.", the definition for recrimination is "A retaliatory accusation.", and the definition for impenitent is "Lacking remorse."

The definition for gravity is "Importance, significance." Used in a sentence: Understanding the gravity of his error, Ken offered his humblest apology. The definition for absolve is "to forgive; to free from guilt.", the definition for placebo is "An inactive substance used in medical testing.", and the definition for drub is "To defeat decisively."

The definition for hedonism is "Belief that pleasure is the sole aim of life." Used in a sentence: The hedonism of the emperoro, who spent all his time giving parties, caused his downfall. The definition for iridescent is "having a lustrous or attractivve quality.", the definition for supple is "Flexible.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for corroborate is "To support with evidence." Used in a sentence: "Unless you can corroborate your story, it will not be admissible in court," the attorney told his client. The definition for onset is "beginning.", the definition for insolence is "Boldness or rudeness.", and the definition for serenity is "Calmness."

The definition for colossal is "Immense, enormous." Used in a sentence: After pushing with all his might, Frank realized he could never move the colossal boulder. The definition for recrimination is "a retaliatory accusation.", the definition for immoderate is "Beyond usual or proper limits.", and the definition for unscrupulous is "Lacking principles."