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 demean is "to lower status.", the definition for refurbish is "To brighten or freshen.", and the definition for supple is "Flexible."

The definition for ramble is "To wander, physically or in language." Used in a sentence: Professor Tan rambled during his lectures, frequently straying from the subject. The definition for cunning is "showing clever insight.", the definition for redouble is "To make twice as great.", and the definition for prune is "To reduce by removing excess."

The definition for impenitent is "Lacking remorse." Used in a sentence: The impenitent criminal received a harsh penalty, but his remorseful accomplice was released. The definition for anthology is "a collection of selected literary pieces.", the definition for gargantuan is "Gigantic.", and the definition for polarize is "To break up into opposing groups."

The definition for curtail is "To make less." Used in a sentence: Doreen decided to curtail her spending after she bounced a check. The definition for implausible is "unbelievable.", the definition for implement is "To carry out or accomplish.", and the definition for procrastinate is "To put off intentionally."

The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for prominence is "importance.", the definition for exasperation is "The state of being irritated.", and the definition for ploy is "A contrived plan."