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 interminable is "never ending, or seemingly endless.", the definition for penurious is "Extrememly stingy.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for revive is "to bring back to life.", the definition for mundane is "Practical, ordinary.", and the definition for hedonism is "Belief that pleasure is the sole aim of life."

The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for foil is "one that enhances or underscores by contrast.", the definition for fraud is "Trick.", and the definition for negate is "To make invalid."

The definition for salvage is "To save from ruin." Used in a sentence: After the fire, Mrs. Han tried to salvage her family photos from the wreckage. The definition for proximity is "closeness.", the definition for eloquent is "Fluent, expressive.", and the definition for procrastinate is "To put off intentionally."

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 defiant is "showing bold resistance.", the definition for turmoil is "Extreme confusion, agitation.", and the definition for oblivious is "Lacking awareness."