The definition for illuminate is "To make clear." Used in a sentence: Her excellent lecture illuminated the complicated subject of nuclear physics. The definition for fickle is "lacking constancy, changeable.", the definition for inviolable is "Secure from assault of trespass.", and the definition for incongruous is "Not harmonious, incompatible."

The definition for aerate is "To supply with air." Used in a sentence: Every spring, Soloman used his tiller to aerate the compact soil. The definition for repel is "to resist, reject.", the definition for turmoil is "Extreme confusion, agitation.", and the definition for corrosive is "Bitingly sarcastic."

The definition for hedonism is "Belief that pleasure is the sole aim of life." Used in a sentence: The hedonism of the emperoro, who spent all his time giving parties, caused his downfall. The definition for civility is "politeness.", the definition for drab is "Dull, monotonous.", and the definition for demean is "To lower status."

The definition for derelict is "Abandoned." Used in a sentence: The derelict house was condemned as a public hazard. The definition for repentant is "feeling regret.", the definition for distortion is "The act of twisting out of shape.", and the definition for implausible is "Unbelievable."

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 induce is "to influence or cause.", the definition for apathetic is "Showing little or no emotion.", and the definition for impenitent is "Lacking remorse."