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 facade is "false or superficial appearance.", the definition for exalt is "To elevate by praise.", and the definition for ecstatic is "Overwhelmingly emotional."

The definition for procrastinate is "To put off intentionally." Used in a sentence: Yvonne's father urged, "Don't procrastinate. Clean your room right away." The definition for pretentious is "making unjustified claims.", the definition for appalling is "Inspiring dismay or disgust.", and the definition for ramble is "To wander, physically or in language."

The definition for unscrupulous is "Lacking principles." Used in a sentence: The unscrupulous salesman was fired for lying to his customers. The definition for drub is "to defeat decisively.", the definition for camaraderie is "Spirit of friendship.", and the definition for catastrophic is "Relating to extreme misfortune."

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 diffident is "lacking self–confidence.", the definition for belated is "Past the normal or proper time.", and the definition for onset is "Beginning."

The definition for flagrant is "Noticeably offensive." Used in a sentence: The executive was fired for his flagrant abuse of the company expense account. The definition for diffident is "lacking self–confidence.", the definition for scamper is "To run quickly.", and the definition for exalt is "To elevate by praise."