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 oblivious is "lacking awareness.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for preclude is "To rule out in advance."

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 epistolary is "contained or carried on in letters.", the definition for precept is "A general rule of action.", and the definition for penurious is "Extrememly stingy."

The definition for polarize is "To break up into opposing groups." Used in a sentence: Thelma tended to polarize discussions rather than to encourage compromise. The definition for negate is "to make invalid.", the definition for foil is "One that enhances or underscores by contrast.", and the definition for turmoil is "Extreme confusion, agitation."

The definition for surplus is "Excess." Used in a sentence: Trevor decided to freeze the surplus chili for next week's tailgate party. The definition for drab is "dull, monotonous.", the definition for garish is "Offensively bright.", and the definition for entangle is "To involve in trouble."

The definition for dubious is "Questionable." Used in a sentence: Karl found Kevin's claim that he was sick dubious, as he had just seen him playing football. The definition for gruff is "rough or stern in manner or speech.", the definition for compulsion is "An irresistible impulse.", and the definition for perception is "Capacity for seeing or understanding."