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 awe is "emotion combining dread and wonder.", the definition for fickle is "Lacking constancy, changeable.", and the definition for regurgitate is "To pour out or throw back."

The definition for supple is "Flexible." Used in a sentence: The supple leather coat draped like soft cloth around her shoulders. The definition for extenuating is "partially excusing.", the definition for onset is "Beginning.", and the definition for augment is "To make greater."

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 extol is "to praise highly.", the definition for censure is "To find fault with.", and the definition for appraise is "To evaluate the worth of."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for regale is "to amuse.", the definition for incumbent is "Necessary as a duty or responsibility.", and the definition for periodic is "Occurring at regular intervals."

The definition for parity is "Equality." Used in a sentence: Hilda, to avoid squabbles, aimed for parity in the slices of birthday cake. The definition for prominence is "importance.", the definition for onset is "Beginning.", and the definition for flaw is "An imperfection."