Pronunciation

/fæst/

Definitions

• Adjective: Moving with great speed; swift or rapid. For example: “The cheetah is one of the fastest land animals.”

  • Also used to describe something that happens quickly or promptly: “She finished her work in record time; it was a fast job.”
  • Referring to a person abstaining from food for a period: “He’s fasting today as part of his religious practice.”
  • Describing a fixed or immovable state: “The door was fastened shut.”

• Adverb: Quickly; with speed. For example: “He drove fast down the highway.”

  • In a secure or immovable manner: “Make sure the gate is fast closed so the dog can’t escape.”

Phrases

• “Fast and furious":形容动作或进程既迅速又激烈。
• “Hold fast”: 紧紧抓住，坚持住（尤指在困难情况下）。
• “Fast asleep”: 形容熟睡的状态。
• “Fast food”: 快餐，指制作和食用都很迅速的食品。

Example Sentences

• Adjective: “She’s known for her ability to run very fast.”
• Adverb: “The car drove away fast after the accident.”
• “The knot held fast during the stormy night.”
• “After a long day, he fell fast asleep on the couch.”

Synonyms

• Swift
• Rapid
• Quick
• Speedy
• Immediate (for some uses)
• Firm (when referring to being securely fixed)
• Solid (in the context of being firmly held/fastened)
• Strict (when referring to fasting)