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 liability is "a person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage.", the definition for inflammatory is "Tending to excite anger.", and the definition for rail is "To scold in harsh language."

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 gruff is "rough or stern in manner or speech.", the definition for inviolable is "Secure from assault of trespass.", and the definition for turmoil is "Extreme confusion, agitation."

The definition for pathos is "Sympathetic pity." Used in a sentence: The soldiers cherished the kindly Nurse Nightingale for her pathos. The definition for demean is "to lower status.", the definition for impenitent is "Lacking remorse.", and the definition for egotist is "Self–important person."

The definition for regurgitate is "To pour out or throw back." Used in a sentence: The teacher wanted us to examine ideas rather than to regurgitate memorized facts. The definition for periodic is "occurring at regular intervals.", the definition for induce is "To influence or cause.", and the definition for epitaph is "Brief statement honoring a dead person."

The definition for negate is "To make invalid." Used in a sentence: Paula negated Tiffany's argument by proving that her main premise was false. The definition for extol is "to praise highly.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for procrastinate is "To put off intentionally."