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 compulsion is "an irresistible impulse.", the definition for meticulous is "Extrememly careful regarding details.", and the definition for condone is "To treat as acceptable."

The definition for benevolent is "Kind, helpful." Used in a sentence: Sherman revealed his benevolent side when he offered to help Carter with his homework. The definition for perception is "capacity for seeing or understanding.", the definition for corrosive is "Bitingly sarcastic.", and the definition for fickle is "Lacking constancy, changeable."

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 stifle is "to repress or discourage.", the definition for turmoil is "Extreme confusion, agitation.", and the definition for buffer is "Protective barrier."

The definition for corrosive is "Bitingly sarcastic." Used in a sentence: The cruel Estella's corrosive comments made Pip cry. The definition for trove is "valuable collection.", the definition for foil is "One that enhances or underscores by contrast.", and the definition for derelict is "Abandoned."

The definition for prune is "To reduce by removing excess." Used in a sentence: The candidate pruned his speech so he would not exceed the time limit. The definition for flaw is "an imperfection.", the definition for abate is "Become less in amount or intensity.", and the definition for euphoria is "Feeling of great happiness."