The definition for revive is "To bring back to life." Used in a sentence: Hank tried to revive Clare's interest in the project, but her enthusiasm had expired. The definition for negate is "to make invalid.", the definition for impenitent is "Lacking remorse.", and the definition for mediate is "To come between parties in order to reconcile."

The definition for promote is "To contribute to the growth or prosperity of." Used in a sentence: The promote peace, the diplomat hosted a talk between the warring nations. The definition for entangle is "to involve in trouble.", the definition for stifle is "To repress or discourage.", and the definition for flaw is "An imperfection."

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 oblivious is "lacking awareness.", the definition for drab is "Dull, monotonous.", and the definition for heed is "To pay attention to."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for inflammatory is "tending to excite anger.", the definition for aerate is "To supply with air.", and the definition for buffer is "Protective barrier."

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 pallid is "lacking color.", the definition for comparable is "Similar, equivalent.", and the definition for unscrupulous is "Lacking principles."