The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for manifest is "obvious.", the definition for negate is "To make invalid.", and the definition for eloquent is "Fluent, expressive."

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 melodious is "having a pleasing melody.", the definition for ploy is "A contrived plan.", and the definition for interminable is "Never ending, or seemingly endless."

The definition for revoke is "To cancel by taking back." Used in a sentence: After Kal's father revoked his allowance, he had no money for the movies. The definition for adversary is "one who opposes or resists.", the definition for flourish is "To make bold, sweeping gestures.", and the definition for iridescent is "Having a lustrous or attractivve quality."

The definition for gravity is "Importance, significance." Used in a sentence: Understanding the gravity of his error, Ken offered his humblest apology. The definition for incidental is "minor.", the definition for illuminate is "To make clear.", and the definition for clairvoyance is "Ability to see things beyond ordinary perception."

The definition for untenable is "Not able to be defended." Used in a sentence: Rashid made the untenable statement that George Washington was the second president of the United States. The definition for mandate is "an official order or commission to do something.", the definition for perception is "Capacity for seeing or understanding.", and the definition for benevolent is "Kind, helpful."