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 combustion is "act of burning.", the definition for cunning is "Showing clever insight.", and the definition for apathetic is "Showing little or no emotion."

The definition for fidelity is "State of being faithful." Used in a sentence: Unlike her fickle friend Benji, May Belle was known for her fidelity. The definition for equitable is "fair and equal.", the definition for heed is "To pay attention to.", and the definition for nurture is "To further the development of."

The definition for proximity is "Closeness." Used in a sentence: The proximity of Tia's house to school meant that she could walk there in five minutes. The definition for plaudits is "enthusiastic approval.", the definition for prominence is "Importance.", and the definition for absolve is "To forgive; to free from guilt."

The definition for gruff is "Rough or stern in manner or speech." Used in a sentence: Heidi's grandfather was gruff, barking stern orders and hardly smiling. The definition for dubious is "questionable.", the definition for lenient is "Mild or tolerant.", and the definition for condone is "To treat as acceptable."

The definition for mediate is "To come between parties in order to reconcile." Used in a sentence: The diplomatic Henry was able to mediate between the quarreling sisters. The definition for pantomime is "telling a story through gestures.", the definition for aerate is "To supply with air.", and the definition for mediate is "To come between parties in order to reconcile."