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 impenitent is "lacking remorse.", the definition for raucous is "Noisy, rowdy.", and the definition for incongruous is "Not harmonious, incompatible."

The definition for retroactive is "effective as of a prior time or condition." Used in a sentence: The retroactive law made even past infractions punishable. The definition for preclude is "to rule out in advance.", the definition for comparable is "Similar, equivalent.", and the definition for avian is "Relating to birds."

The definition for accentuate is "To emphasize." Used in a sentence: Carla used red ribbons to accentuate the coppery tones in her hair. The definition for solace is "source of consolation.", the definition for proximity is "Closeness.", and the definition for drab is "Dull, monotonous."

The definition for euphoria is "Feeling of great happiness." Used in a sentence: Cassandra was overcome with euphoria when she met her long–lost sister. The definition for fickle is "lacking constancy, changeable.", the definition for condone is "To treat as acceptable.", and the definition for appalling is "Inspiring dismay or disgust."

The definition for pretentious is "Making unjustified claims." Used in a sentence: The pretentious boy said that he was the fastest runner, but he finished last in the race. The definition for censure is "to find fault with.", the definition for rancorous is "Marked by deep ill–will.", and the definition for fraud is "Trick."