This document defines 20 words: approbation, assuage, coalition, decadence, elicit, expostulate, hackneyed, hiatus, innuendo, intercede, jaded, lurid, meritorious, petulant, prerogative, provincial, simulate, transcend, umbrage, and unctuous. For each word, it provides the part of speech, definition, and sometimes synonyms and antonyms. The document concisely defines each of the 20 words in 1-2 sentences.