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"fast acting" vs "fast-acting"

Both "fast acting" and "fast-acting" are correct, but they are used in different contexts. "Fast acting" is used when describing a person or thing that acts quickly, while "fast-acting" is used as a compound modifier before a noun to describe something that acts quickly.

Last Updated: April 01, 2024

fast acting

This phrase is correct and commonly used in English.

This phrase is used to describe a person or thing that acts quickly.

Examples:

  • He is known for being a fast acting problem solver.
  • The fast acting medication provided immediate relief.
  • The fast acting team quickly resolved the issue.
  • She is a fast acting individual who gets things done efficiently.
  • The fast acting response saved lives.

Alternatives:

  • quick acting
  • rapid acting
  • speedy acting
  • swift acting
  • prompt acting

fast-acting

This phrase is correct and commonly used in English.

This phrase is used as a compound modifier before a noun to describe something that acts quickly.

Examples:

  • The fast-acting medication provided immediate relief.
  • She prefers fast-acting solutions to problems.
  • The fast-acting team quickly resolved the issue.
  • The fast-acting formula works within minutes.
  • The fast-acting treatment is highly effective.

Alternatives:

  • quick-acting
  • rapid-acting
  • speedy-acting
  • swift-acting
  • prompt-acting

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