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au fil de

French, preposition/o fil də/

au fil de is a French preposition meaning “in the course of, over the course of” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Au cours de ; dans le déroulement de”.

What does au fil de mean in English?

preposition

  1. 1

    in the course of, over the course of

    au fil des mois

Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).

How French dictionaries define it

preposition: 1. Au cours de ; dans le déroulement de.

The definition in the French Wiktionary (Wiktionnaire), in French.

Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.

How do you pronounce au fil de?

  • /o fil də/
  • \o fil də\

Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.