The definition for corroborate is "To support with evidence." Used in a sentence: "Unless you can corroborate your story, it will not be admissible in court," the attorney told his client. The definition for periodic is "occurring at regular intervals.", the definition for derelict is "Abandoned.", and the definition for untenable is "Not able to be defended."

The definition for opportune is "Suitable or convenient." Used in a sentence: Quan stepped onto the platform at the most opportune time, just as the train pulled in. The definition for awe is "emotion combining dread and wonder.", the definition for euphoria is "Feeling of great happiness.", and the definition for procrastinate is "To put off intentionally."

The definition for accentuate is "To emphasize." Used in a sentence: Carla used red ribbons to accentuate the coppery tones in her hair. The definition for pantomime is "telling a story through gestures.", the definition for fraud is "Trick.", and the definition for fickle is "Lacking constancy, changeable."

The definition for polarize is "To break up into opposing groups." Used in a sentence: Thelma tended to polarize discussions rather than to encourage compromise. The definition for perception is "capacity for seeing or understanding.", the definition for disconcert is "To throw into confusion.", and the definition for grandiose is "With an affectation of grandeur."

The definition for heed is "To pay attention to." Used in a sentence: "Heed my advice," the fortuneteller warned Sebastian when he tried to ignore her prophecy. The definition for salvage is "to save from ruin.", the definition for flagrant is "Noticeably offensive.", and the definition for benefactor is "One who offers financial help."