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 facade is "false or superficial appearance.", the definition for precept is "A general rule of action.", and the definition for regale is "To amuse."

The definition for clarity is "Clearness." Used in a sentence: The refreshing water in the mountain stream was remarkable for its clarity. The definition for equitable is "fair and equal.", the definition for distortion is "The act of twisting out of shape.", and the definition for intricate is "Having complex and interrelated parts."

The definition for drub is "To defeat decisively." Used in a sentence: The powerful young boxer drubbed the longtime champion. The definition for raspy is "rough, grating.", the definition for inviolable is "Secure from assault of trespass.", and the definition for repentant is "Feeling regret."

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 appalling is "inspiring dismay or disgust.", the definition for insinuate is "To suggest indirectly.", and the definition for induce is "To influence or cause."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for ploy is "a contrived plan.", the definition for diffident is "Lacking self–confidence.", and the definition for frugal is "Thrifty, cheap."