(n) (손으로) 더듬거리기; (미식축구에서) 펌블, 공을 놓침
= (v) use the hands clumsily while doing or handling something
(n) an act of using the hands clumsily while doing or handling something
* double down (on ~) = (위험을 무릅쓰고, 열정, 강경한 입장을)배가하다, 더 단호히 밀어 부치다
= to increase one's commitment[become more determined or resolute] to a course of action, often one that is risky