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