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 extol is "to praise highly.", the definition for revoke is "To cancel by taking back.", and the definition for promote is "To contribute to the growth or prosperity of."

The definition for iridescent is "Having a lustrous or attractivve quality." Used in a sentence: The movie star's iridescent presence charmed even the hardened reporter. The definition for serenity is "calmness.", the definition for pantomime is "Telling a story through gestures.", and the definition for prudent is "Marked by wisdom, shrewd."

The definition for dubious is "Questionable." Used in a sentence: Karl found Kevin's claim that he was sick dubious, as he had just seen him playing football. The definition for prune is "to reduce by removing excess.", the definition for recrimination is "A retaliatory accusation.", and the definition for straddle is "To favor opposing sides."

The definition for rancorous is "Marked by deep ill–will." Used in a sentence: The rancorous competition between the two chess clubs actually ended in a brawl. The definition for naive is "lacking worldy wisdom.", the definition for avian is "Relating to birds.", 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 derivative is "lacking originality.", the definition for lurid is "Causing horror, shocking.", and the definition for indecorous is "In bad taste."