The indefinite pronoun (quiconque)

When establishing formal rules, warnings, or legal conditions, you often need a word that covers absolutely anyone. To say "whoever" or "anyone who," French uses the indefinite pronoun quiconque.

Quiconque as a Subject

Most often, quiconque sits at the beginning of a sentence to establish a general rule. Because it refers to a single, unspecified person, it takes the third-person singular form of the verb (just like il or elle).

Whoever does not have the badge cannot enter.
Quiconque n'a pas le badge ne peut pas entrer.
Whoever approaches the secured door must stop.
Quiconque s'approche de la porte sécurisée doit s'arrêter.

It is especially common when outlining strict security rules, identifying intruders, or setting perimeters.

Whoever enters this large perimeter must show his badge.
Quiconque pénètre dans ce grand périmètre doit montrer son badge.
Whoever finds the intruder must report him before it is too late.
Quiconque trouve l'intrus doit le signaler avant qu'il soit trop tard.

Quiconque as an Object

Quiconque can also appear as the object of a verb, meaning the action is done to "whoever." Notice how it bridges the main clause and the rule that follows:

The judge severely condemns whoever breaks this law.
Le juge condamne sévèrement quiconque enfreint cette loi.
The policeman is going to expel whoever refuses to leave the perimeter.
Le policier va expulser quiconque refuse de quitter le périmètre.
Stop whoever enters the secured zone, in case he is dangerous.
Arrêtez quiconque pénètre dans la zone sécurisée, au cas où il serait dangereux.