(每日一词）tenacious

Tenacious /təˈneɪ.ʃəs/ adj. 紧握的；顽固的；固执的

meaning: If you are tenacious, you are very determined and do not give up easily. 

词根：ten-拿( 联想：十拿九稳）

后缀：-acious 形容词后缀（famous)

e.g.  The athlete's tenacious spirit helped her overcome numerous obstacles to win the championship. 运动员坚韧不拔的精神帮助她克服了许多障碍，赢得了冠军。

e.g. The baby took my finger in its tenacious little fist. 那个婴儿用他的小拳头紧紧攥着我的手指。