The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for retroactive is "effective as of a prior time or condition.", the definition for insolence is "Boldness or rudeness.", and the definition for garish is "Offensively bright."

The definition for benefactor is "One who offers financial help." Used in a sentence: Michael's aunt and benefactor paid his college tuition. The definition for combative is "eager to fight.", the definition for turmoil is "Extreme confusion, agitation.", and the definition for disdain is "Feeling of contempt."

The definition for deferment is "The act of delaying." Used in a sentence: Sybil was frustrated by the deferment of her much anticipated vacation. The definition for scamper is "to run quickly.", the definition for impenitent is "Lacking remorse.", and the definition for preclude is "To rule out in advance."

The definition for pantomime is "Telling a story through gestures." Used in a sentence: The jealous actress called her understudy's performance a ridiculous pantomime. The definition for deferment is "the act of delaying.", the definition for abate is "Become less in amount or intensity.", and the definition for catastrophic is "Relating to extreme misfortune."

The definition for iridescent is "Having a lustrous or attractivve quality." Used in a sentence: The movie star's iridescent presence charmed even the hardened reporter. The definition for corrective is "intended to correct.", the definition for buffoonery is "Foolish behavior.", and the definition for abate is "Become less in amount or intensity."