In French, “to manifest” is usually manifester.

How it’s used

  • Manifester = to show, express, or demonstrate something clearly.
  • For a protest or street demonstration, manifester is also the correct verb.
  • The noun a manifestation means a demonstration/protest.

Example

  • Elle manifeste son intérêt. = “She shows her interest.”
  • Ils manifestent contre la réforme. = “They are protesting against the reform.”

Small note

If you mean “manifest” in the self-help / make-it-happen sense, French still often uses manifester , but the exact wording can depend on the context.