The definition for unscrupulous is "Lacking principles." Used in a sentence: The unscrupulous salesman was fired for lying to his customers. The definition for aerate is "to supply with air.", the definition for proximity is "Closeness.", and the definition for lenient is "Mild or tolerant."

The definition for opportune is "Suitable or convenient." Used in a sentence: Quan stepped onto the platform at the most opportune time, just as the train pulled in. The definition for rancorous is "marked by deep ill–will.", the definition for obnoxious is "Highly offensive.", and the definition for demeanor is "Behavior towards others."

The definition for prudent is "Marked by wisdom, shrewd." Used in a sentence: Manny was happy she followed Greg's prudent advice to study, as the test was difficult. The definition for derelict is "abandoned.", the definition for oblivious is "Lacking awareness.", and the definition for scamper is "To run quickly."

The definition for interminable is "Never ending, or seemingly endless." Used in a sentence: The impatient Zoe found the longwinded lecture interminable. The definition for placebo is "an inactive substance used in medical testing.", the definition for comparable is "Similar, equivalent.", and the definition for flourish is "To make bold, sweeping gestures."

The definition for negate is "To make invalid." Used in a sentence: Paula negated Tiffany's argument by proving that her main premise was false. The definition for pallid is "lacking color.", the definition for discern is "To recognize as separate as distinct.", and the definition for melodious is "Having a pleasing melody."