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 genial is "sympathetic, friendly.", the definition for gravity is "Importance, significance.", and the definition for unscrupulous is "Lacking principles."

The definition for gargantuan is "Gigantic." Used in a sentence: The gargantuan monster towered over the ten–story bulding. The definition for recrimination is "a retaliatory accusation.", the definition for buffoonery is "Foolish behavior.", and the definition for surplus is "Excess."

The definition for heinous is "Shockingly evil." Used in a sentence: Eduardo's heinous betrayal of Lydia shocked even Latasha, who knew his evil ways. The definition for melee is "a tumultuous fight among several people.", the definition for disconcert is "To throw into confusion.", and the definition for preclude is "To rule out in advance."

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 mundane is "practical, ordinary.", the definition for abate is "Become less in amount or intensity.", and the definition for manifest is "Obvious."

The definition for mundane is "Practical, ordinary." Used in a sentence: The flighty Caroline could not be troubled with mundane tasks such as paying her bills. The definition for corroborate is "to support with evidence.", the definition for onset is "Beginning.", and the definition for prominence is "Importance."