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 interminable is "never ending, or seemingly endless.", the definition for melodious is "Having a pleasing melody.", and the definition for comparable is "Similar, equivalent."

The definition for futile is "Without purpose, completely ineffective." Used in a sentence: Arguing with Andrew is futile because he never changes his mind. The definition for preclude is "to rule out in advance.", the definition for drub is "To defeat decisively.", and the definition for lenient is "Mild or tolerant."

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 serenity is "calmness.", the definition for heinous is "Shockingly evil.", and the definition for salvage is "To save from ruin."

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 flourish is "to make bold, sweeping gestures.", the definition for turmoil is "Extreme confusion, agitation.", and the definition for periodic is "Occurring at regular intervals."

The definition for inauspicious is "Not favorable." Used in a sentence: Gary believed the black foreboding sky was an inauspicious sign. The definition for disconcert is "to throw into confusion.", the definition for insinuate is "To suggest indirectly.", and the definition for appalling is "Inspiring dismay or disgust."