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 benefactor is "one who offers financial help.", the definition for rancorous is "Marked by deep ill–will.", and the definition for refurbish is "To brighten or freshen."

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 benefactor is "one who offers financial help.", the definition for redouble is "To make twice as great.", and the definition for indecorous is "In bad taste."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for hedonism is "belief that pleasure is the sole aim of life.", the definition for clairvoyance is "Ability to see things beyond ordinary perception.", and the definition for iridescent is "Having a lustrous or attractivve quality."

The definition for scamper is "To run quickly." Used in a sentence: The frightened kitten scampered away from the butterfly. The definition for facade is "false or superficial appearance.", the definition for indecorous is "In bad taste.", and the definition for precept is "A general rule of action."

The definition for colossal is "Immense, enormous." Used in a sentence: After pushing with all his might, Frank realized he could never move the colossal boulder. The definition for retroactive is "effective as of a prior time or condition.", the definition for epitaph is "Brief statement honoring a dead person.", and the definition for combustion is "Act of burning."