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 regurgitate is "to pour out or throw back.", the definition for induce is "To influence or cause.", and the definition for heed is "To pay attention to."

The definition for corrective is "Intended to correct." Used in a sentence: The school decided to take corrective measures to prevent truancy. The definition for pallid is "lacking color.", the definition for curtail is "To make less.", and the definition for trove is "Valuable collection."

The definition for ploy is "A contrived plan." Used in a sentence: Sarah thought George's ploy of borrowing her notes was a cowardly way to ask her out. The definition for scamper is "to run quickly.", the definition for stern is "Harsh, severe.", and the definition for adversary is "One who opposes or resists."

The definition for manifest is "Obvious." Used in a sentence: James finally made his affection manifest when he handed Jessica a red rose. The definition for commemorate is "to mark by a ceremony.", the definition for illuminate is "To make clear.", and the definition for insolence is "Boldness or rudeness."

The definition for extol is "To praise highly." Used in a sentence: The statesman extolled the ambassador who single–handedly negotiated the peace treaty. The definition for recrimination is "a retaliatory accusation.", the definition for revive is "To bring back to life.", and the definition for facade is "false or superficial appearance."