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 clarity is "clearness.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for corroborate is "To support with evidence."

The definition for melodious is "Having a pleasing melody." Used in a sentence: The melodious sounds of the symphony soothed Tim after his trying day. The definition for disconcert is "to throw into confusion.", the definition for combustion is "Act of burning.", and the definition for authoritarian is "Favoring absolute obedience to authority."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for epistolary is "contained or carried on in letters.", the definition for gruff is "Rough or stern in manner or speech.", and the definition for incisive is "Impressively direct and decisive."

The definition for stern is "Harsh, severe." Used in a sentence: The stern principal canceled the prom after the seniors played a silly prank. The definition for periodic is "occurring at regular intervals.", the definition for rehash is "To discuss again.", and the definition for hedonism is "Belief that pleasure is the sole aim of life."

The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for fraud is "trick.", the definition for periodic is "Occurring at regular intervals.", and the definition for equitable is "Fair and equal."