Solution
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 promote is "to contribute to the growth or prosperity of.", the definition for aesthete is "Person having or affecting sensitivity to beauty.", and the definition for liability is "A person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage."