The definition for corroborate is "To support with evidence." Used in a sentence: "Unless you can corroborate your story, it will not be admissible in court," the attorney told his client. The definition for commemorate is "to mark by a ceremony.", the definition for fidelity is "State of being faithful.", and the definition for foil is "One that enhances or underscores by contrast."

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 opportune is "suitable or convenient.", the definition for defiant is "Showing bold resistance.", and the definition for inflammatory is "Tending to excite anger."

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 derivative is "lacking originality.", the definition for negate is "To make invalid.", and the definition for straddle is "To favor opposing sides."

The definition for duplicity is "Deceptive thought, speech, or action." Used in a sentence: The life of an undercover detective is filed with necessary duplicity. The definition for duplicity is "deceptive thought, speech, or action.", the definition for scapegoat is "Someone who bears the blame for others.", and the definition for eloquent is "Fluent, expressive."

The definition for egotist is "Self–important person." Used in a sentence: Darren dreaded carpooling with the egotist Shelly, who talked about herself nonstop. The definition for ecstatic is "overwhelmingly emotional.", the definition for incumbent is "Necessary as a duty or responsibility.", and the definition for pretentious is "Making unjustified claims."