Acting, moving, or capable of acting or moving quickly; swift.
파생어
fasten [동] fastness [명]
예문
1. a fast train (급행 열차) 2. My watch is five minutes fast. (나의 시계는 5분 빠르다) 3. hold fast to a rail (난간에 매달리다) 4. a fast horse (준마) 5. be fast bound by the feet (양 다리가 꽉 묶여 있다)
