The definition for impenitent is "Lacking remorse." Used in a sentence: The impenitent criminal received a harsh penalty, but his remorseful accomplice was released. The definition for perception is "capacity for seeing or understanding.", the definition for comparable is "Similar, equivalent.", and the definition for appalling is "Inspiring dismay or disgust."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for polarize is "to break up into opposing groups.", the definition for oblivious is "Lacking awareness.", and the definition for procrastinate is "To put off intentionally."

The definition for brandish is "To shake or wave menacingly." Used in a sentence: The baseball player was fined for brandishing his bat at the opposing pitcher. The definition for ploy is "a contrived plan.", the definition for buffer is "Protective barrier.", and the definition for iridescent is "Having a lustrous or attractivve quality."

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 pallid is "lacking color.", the definition for genial is "Sympathetic, friendly.", and the definition for aerate is "To supply with air."

The definition for extant is "Currently existing." Used in a sentence: Some consider Clint Eastwood the greatest extant American director. The definition for perception is "capacity for seeing or understanding.", the definition for drub is "To defeat decisively.", and the definition for authoritarian is "Favoring absolute obedience to authority."