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 foil is "one that enhances or underscores by contrast.", the definition for interminable is "Never ending, or seemingly endless.", and the definition for hedonism is "Belief that pleasure is the sole aim of life."

The definition for elate is "To fill with joy." Used in a sentence: It elated Margaret to be awarded first place in the science fair. The definition for flourish is "to make bold, sweeping gestures.", the definition for revive is "To bring back to life.", and the definition for revoke is "To cancel by taking 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 placebo is "an inactive substance used in medical testing.", the definition for diffident is "Lacking self–confidence.", and the definition for plaudits is "Enthusiastic approval."

The definition for elusive is "Hard to grasp." Used in a sentence: The words to the song are elusive, as the singer tends to mumble. The definition for defiant is "showing bold resistance.", the definition for perception is "Capacity for seeing or understanding.", and the definition for facade is "false or superficial appearance."

The definition for condone is "To treat as acceptable." Used in a sentence: Crystal condoned her friend's late arrival because she found it hard to be on time herself. The definition for recrimination is "a retaliatory accusation.", the definition for discern is "To recognize as separate as distinct.", and the definition for moderate is "Tending toward the average."