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 incumbent is "necessary as a duty or responsibility.", the definition for brandish is "To shake or wave menacingly.", and the definition for epistolary is "Contained or carried on in letters."

The definition for beneficial is "Helpful." Used in a sentence: there is no doubt that eating vegetables is beneficial to one's health. The definition for buffoonery is "foolish behavior.", the definition for anthology is "A collection of selected literary pieces.", and the definition for pathos is "Sympathetic pity."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for heinous is "shockingly evil.", the definition for stifle is "To repress or discourage.", and the definition for corrective is "Intended to correct."

The definition for sociable is "Inclined to seek companionship." Used in a sentence: The sociable Glenda was delighted to receive the party invitation. The definition for retroactive is "effective as of a prior time or condition.", the definition for corroborate is "To support with evidence.", and the definition for lurid is "Causing horror, shocking."

The definition for drub is "To defeat decisively." Used in a sentence: The powerful young boxer drubbed the longtime champion. The definition for abate is "become less in amount or intensity.", the definition for disdain is "Feeling of contempt.", and the definition for foil is "One that enhances or underscores by contrast."