ABSTRACT Mohammad Syauqi, 2014, The Effect of Guessing Word Game on Students’ Vocabulary Mastery at the Seventh Grade of SMP Al-Hikmah Gugul Tlanakan, Thesis, English Teaching Learning Program (TBI), Tarbiyah Department, The State of Islamic College (STAIN) Pamekasan. Advisor: Eva Nikmatul Rabbianty, M.Pd. Key Words: Guessing Word Game, Vocabulary Mastery People with large vocabulary are…