The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for flaunt is "to display showily.", the definition for untenable is "Not able to be defended.", and the definition for induce is "To influence or cause."

The definition for rail is "To scold in harsh language." Used in a sentence: Clay began to cry as his irate manager railed at him for missing the deadline. The definition for insolence is "boldness or rudeness.", the definition for extenuating is "Partially excusing.", and the definition for oblivious is "Lacking awareness."

The definition for extol is "To praise highly." Used in a sentence: The statesman extolled the ambassador who single–handedly negotiated the peace treaty. The definition for opportune is "suitable or convenient.", the definition for frugal is "Thrifty, cheap.", and the definition for raucous is "Noisy, rowdy."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for fraud is "trick.", the definition for demeanor is "Behavior towards others.", and the definition for eloquent is "Fluent, expressive."

The definition for supple is "Flexible." Used in a sentence: The supple leather coat draped like soft cloth around her shoulders. The definition for comparable is "similar, equivalent.", the definition for pathos is "Sympathetic pity.", and the definition for catastrophic is "Relating to extreme misfortune."