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 serenity is "calmness.", the definition for eloquent is "Fluent, expressive.", and the definition for retroactive is "effective as of a prior time or condition."

The definition for redouble is "To make twice as great." Used in a sentence: As the sun began to set, Brittany redoubled her effort to find the necklace she had dropped in the field. The definition for scamper is "to run quickly.", the definition for stealth is "The act of moving secretly or unnoticed.", and the definition for regale is "To amuse."

The definition for flaunt is "To display showily." Used in a sentence: Sheila, who could not resist bragging, flaunted the "A" marked on her test paper. The definition for pathos is "sympathetic pity.", the definition for incidental is "Minor.", and the definition for straddle is "To favor opposing sides."

The definition for revive is "To bring back to life." Used in a sentence: Hank tried to revive Clare's interest in the project, but her enthusiasm had expired. The definition for foil is "one that enhances or underscores by contrast.", the definition for discern is "To recognize as separate as distinct.", and the definition for incisive is "Impressively direct and decisive."

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 extenuating is "partially excusing.", the definition for indecorous is "In bad taste.", and the definition for ramble is "To wander, physically or in language."