Loanwords:
* Week-end: This is a direct borrowing from the English language.
* Whiskey: This is also a direct borrowing, though it is often pronounced "oui-ski" in French.
* Wifi: This is another borrowed word, though the French tend to use "Wi-Fi" instead.
* Watt: This is a unit of measurement borrowed from English, and it is pronounced "watt" in French as well.
Other:
* W (the letter W itself): This is sometimes used in abbreviations, like "W.C." for "water closet" (toilet).
* Wouah: This is an interjection meaning "wow" or "whoa." It is considered informal.
It is important to note that while "W" is not a part of the French alphabet, it does appear in loanwords and some specific contexts. However, it is not commonly used in native French words.