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 iridescent is "having a lustrous or attractivve quality.", the definition for comprehensible is "Understandable.", and the definition for exalt is "To elevate by praise."

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 redouble is "to make twice as great.", the definition for mandate is "An official order or commission to do something.", and the definition for preclude is "To rule out in advance."

The definition for straddle is "To favor opposing sides." Used in a sentence: Kia straddled the issue, not wanting to say whether James or Tara was right. The definition for scamper is "to run quickly.", the definition for corrective is "Intended to correct.", and the definition for buffer is "Protective barrier."

The definition for absolve is "To forgive; to free from guilt." Used in a sentence: Marta felt greatly relieved after her mother absolved her for breaking the vase. The definition for obnoxious is "highly offensive.", the definition for abate is "Become less in amount or intensity.", and the definition for serenity is "Calmness."

The definition for inviolable is "Secure from assault of trespass." Used in a sentence: Situated on a mountain, with sixteen–foot walls, the castle was inviolable. The definition for mundane is "practical, ordinary.", the definition for exalt is "To elevate by praise.", and the definition for appraise is "To evaluate the worth of."