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 incisive is "impressively direct and decisive.", the definition for discern is "To recognize as separate as distinct.", and the definition for straddle is "To favor opposing sides."

The definition for augment is "To make greater." Used in a sentence: Wanda read the dictionary every night to augment her vocabulary. The definition for belated is "past the normal or proper time.", the definition for inauspicious is "Not favorable.", and the definition for revoke is "To cancel by taking back."

The definition for perception is "Capacity for seeing or understanding." Used in a sentence: His incredible perception made him the best detective on the force. The definition for perception is "capacity for seeing or understanding.", the definition for melee is "A tumultuous fight among several people.", and the definition for advantageous is "Giving an advantage."

The definition for corrosive is "Bitingly sarcastic." Used in a sentence: The cruel Estella's corrosive comments made Pip cry. The definition for frugal is "thrifty, cheap.", the definition for comprehensible is "Understandable.", and the definition for deferment is "The act of delaying."

The definition for inviolable is "Secure from assault of trespass." Used in a sentence: Situated on a mountain, with sixteen–foot walls, the castle was inviolable. The definition for parity is "equality.", the definition for belated is "Past the normal or proper time.", and the definition for immoderate is "Beyond usual or proper limits."