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"Accent aigu" is the French term for "acute accent."
Mexico uses the acute accent.
An ague is an acute fever, the cold fit which sets off the fever, or a state of chill, as if with cold.
AN ACUTE ACCENT
No, the word "mum" in French does not have an acute accent. In French, "mum" is written as "maman" without any diacritical marks.