SAT Word of the Day PowerScore Test Preparation on November 18, 2010 at 1:00 AM Find me on: Facebook Google+ Tweet Tenacious (adj.) unyielding; stubborn (pronounced "tuh-NEY-shuhs") Example Sentence: The tenacious defense refused to let the opponent score. Create your own sentence and post it below. The best sentence will be entered to win a free SAT course. * We will choose a new winner each month. Good luck!