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　　contusion (n.) bruise, injury (The contusions on his face suggested he’d been in a fight.) conundrum (n.) puzzle, problem (Interpreting Jane’s behavior was a constant conundrum.) convene (v.) to call together (Jason convened his entire extended family for a discussion.) convention 1. (n.) an assembly of people (The hotel was full because of the cattleranchers’
　　convention.) 2. (n.) a rule, custom (The cattle-ranchers have a convention that you take off your boots before entering their houses.) convivial (adj.) characterized by feasting, drinking, merriment (The restaurant’s convivial atmosphere put me immediately at ease.) convoluted (adj.) intricate, complicated (Grace’s story was so convoluted that I couldn’t follow it.) copious (adj.) profuse, abundant (Copious amounts of Snapple were imbibed in the cafeteria.) cordial (adj.) warm, affectionate (His cordial greeting melted my anger at once.)
　　coronation (n.) the act of crowning (The new king’s coronation occurred the day after his father’s death.) corpulence (adj.)extreme fatness (Henry’s corpulence did not make him any less attractive to his charming, svelte wife.) corroborate (v.) to support with evidence (Luke’s seemingly outrageous claim was corroborated by witnesses.) corrosive (adj.) having the tendency to erode or eat away (The effect of the chemical was highly corrosive.) cosmopolitan (adj.) sophisticated, worldly (Lloyd’s education and upbringing were cosmopolitan, so he felt right at home among the powerful and learned.)