mediocrity n. 平庸，碌碌無為(mediocre abilities or attainment)

　　[例]Grateful as we are for these splendid books, they remain isolated examples of excellence in a literature of mediocrity.

　　melancholy adj. 憂郁的(depressed);令人悲傷的(causing depression)

　　[記]詞根記憶：melan(黑色)+chol(=bile膽汁)+y→膽汁發黑→憂郁的

　　menial adj. 仆人的，卑微的(of servants;humble);n. 家仆(a domestic servant)

　　[例]Although Ms. Brown found some of her duties to be menial, her supervision of forty workers was a considerable responsibility.

　　[同]subservient, obsequious, servile, slavish

　　mercenary adj. 唯利是圖的(acting merely for money);n. 雇傭兵(a professional soldier hired to serve in a foreign army for money)

　　[記]詞根記憶：mercen(工資)+ary→只為了工錢的→唯利是圖的

　　meretricious adj. 華而不實的，俗艷的(tawdrily and falsely attractive)

　　[記]來自meretrix(妓女)

　　meritorious adj. 值得贊賞的(deserving praise and esteem)

　　[記]merit(優點，長處)+orious(多…的)→長處很多→值得贊賞的

　　mesmerize v. 對…催眠(to hypnotize);使入迷，迷住(to fascinate)

　　metabolic adj. 新陳代謝的(of, relating to, or based on metabolism)

　　[記]來自metabol(y)(新陳代謝)+ic→新陳代謝的

　　[例]When trees go dormant in winter, the procedure is anything but sleepy: it is an active metabolic process that changes the plant radically.

　　metamorphose v. 變形(to change into another form)

　　[記]詞根記憶：meta(變化)+morph(形狀)+ose→變形

　　以上就是新GRE紅寶書缺失詞匯，大家在備考GRE詞匯的時候，注意將單詞背誦與單詞運用相結合，這樣不僅能更有效的記住單詞，還能提高考生的英語應用水平，將單詞真正轉化為GRE成績。