The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for derivative is "lacking originality.", the definition for insolence is "Boldness or rudeness.", and the definition for composed is "Calm."

The definition for repel is "To resist, reject." Used in a sentence: The soldiers made a massive charge to repel the invaders. The definition for opportune is "suitable or convenient.", the definition for belated is "Past the normal or proper time.", and the definition for prune is "To reduce by removing excess."

The definition for stifle is "To repress or discourage." Used in a sentence: Amy tried ineffectively to stifle her giggles after she read Susan's note in class. The definition for induce is "to influence or cause.", the definition for curtail is "To make less.", and the definition for corroborate is "To support with evidence."

The definition for immoderate is "Beyond usual or proper limits." Used in a sentence: Bob's immoderate appetite shocked the guests at the wedding banquet. The definition for impenitent is "lacking remorse.", the definition for prudent is "Marked by wisdom, shrewd.", and the definition for rehash is "To discuss again."

The definition for discern is "To recognize as separate as distinct." Used in a sentence: The pastry connoisseur was able to discern Swiss from Belgian chocolate. The definition for fraud is "trick.", the definition for plaudits is "Enthusiastic approval.", and the definition for placebo is "An inactive substance used in medical testing."