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 mandate is "an official order or commission to do something.", the definition for antidote is "Something that relieves or counteracts.", and the definition for brandish is "To shake or wave menacingly."

The definition for exception is "A case to which the rule does not apply." Used in a sentence: The teacher made an exception and let Gina eat her snack in class. The definition for repel is "to resist, reject.", the definition for egotist is "Self–important person.", and the definition for solace is "Source of consolation."

The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for rancorous is "marked by deep ill–will.", the definition for gruff is "Rough or stern in manner or speech.", and the definition for turpitude is "Essential baseness, depravity."

The definition for pretentious is "Making unjustified claims." Used in a sentence: The pretentious boy said that he was the fastest runner, but he finished last in the race. The definition for revoke is "to cancel by taking back.", the definition for oblivious is "Lacking awareness.", and the definition for anthology is "A collection of selected literary pieces."

The definition for flagrant is "Noticeably offensive." Used in a sentence: The executive was fired for his flagrant abuse of the company expense account. The definition for genial is "sympathetic, friendly.", the definition for aerate is "To supply with air.", and the definition for exasperation is "The state of being irritated."