The definition for regurgitate is "To pour out or throw back." Used in a sentence: The teacher wanted us to examine ideas rather than to regurgitate memorized facts. The definition for extant is "currently existing.", the definition for catastrophic is "Relating to extreme misfortune.", and the definition for euphoria is "Feeling of great happiness."

The definition for trove is "Valuable collection." Used in a sentence: Walter's trove of vintage baseball cards was worth thousands of dollars. The definition for foil is "one that enhances or underscores by contrast.", the definition for clairvoyance is "Ability to see things beyond ordinary perception.", and the definition for opportune is "Suitable or convenient."

The definition for moderate is "Tending toward the average." Used in a sentence: The best–selling writer was disappointed; his new novel was only a moderate success. The definition for rail is "to scold in harsh language.", the definition for flaunt is "To display showily.", and the definition for gruff is "Rough or stern in manner or speech."

The definition for corrosive is "Bitingly sarcastic." Used in a sentence: The cruel Estella's corrosive comments made Pip cry. The definition for melodious is "having a pleasing melody.", the definition for archetypal is "Characteristic of the original model or perfect example.", and the definition for adversary is "One who opposes or resists."

The definition for penurious is "Extrememly stingy." Used in a sentence: Ebenezer Scrooge was most penurious, refusing to give even a penny to charity. The definition for fragile is "delicate.", the definition for lenient is "Mild or tolerant.", and the definition for futile is "Without purpose, completely ineffective."