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 derelict is "abandoned.", the definition for pantomime is "Telling a story through gestures.", and the definition for diffident is "Lacking self–confidence."

The definition for corrective is "Intended to correct." Used in a sentence: The school decided to take corrective measures to prevent truancy. The definition for flaw is "an imperfection.", the definition for catastrophic is "Relating to extreme misfortune.", and the definition for entangle is "To involve in trouble."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for derelict is "abandoned.", the definition for pomp is "Showy display.", and the definition for corrective is "Intended to correct."

The definition for beneficial is "Helpful." Used in a sentence: there is no doubt that eating vegetables is beneficial to one's health. The definition for curtail is "to make less.", the definition for negate is "To make invalid.", and the definition for incumbent is "Necessary as a duty or responsibility."

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 pretense is "false intention or purpose.", the definition for discern is "To recognize as separate as distinct.", and the definition for plaudits is "Enthusiastic approval."