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 gruff is "rough or stern in manner or speech.", the definition for buffoonery is "Foolish behavior.", and the definition for promote is "To contribute to the growth or prosperity of."

The definition for mandate is "An official order or commission to do something." Used in a sentence: Martha reluctantly obeyed the mandate to vacate her apartment. The definition for celebrated is "widely known, respected.", the definition for derelict is "Abandoned.", and the definition for aesthete is "Person having or affecting sensitivity to beauty."

The definition for appraise is "To evaluate the worth of." Used in a sentence: Simone, an expert in African sculpture, was asked to appraise the ambassador's collection of masks. The definition for extant is "currently existing.", the definition for salvage is "To save from ruin.", and the definition for heinous is "Shockingly evil."

The definition for induce is "To influence or cause." Used in a sentence: The loud blast of the cannon induced an avalanche. The definition for combustion is "act of burning.", the definition for repel is "To resist, reject.", and the definition for incongruous is "Not harmonious, incompatible."

The definition for corrosive is "Bitingly sarcastic." Used in a sentence: The cruel Estella's corrosive comments made Pip cry. The definition for flagrant is "noticeably offensive.", the definition for prudent is "Marked by wisdom, shrewd.", and the definition for scapegoat is "Someone who bears the blame for others."