Most verbs are personal: they must be conjugated for different grammatical persons. But some verbs are used impersonally, meaning they have only one conjugation, the third person singular.
Indefinite adjectives like certains, divers, and quelques describe nouns in a general or non-specific way. Many indefinite adjectives indicate a vague quantity.
Talking about indefinite concepts can be tricky in a foreign language, yet indefinite adverbs are rarely covered as a specific topic in class. This lesson considers them as a group.
Indefinite pronouns are vague - they either refer to unspecific nouns (like un autre and quelque chose) or make sweeping generalizations (on, tout le monde).
Indefinite relative pronouns (ce dont, ce que, ce qui, ce à quoi) are connectors: they link relative clauses to main clauses and, unlike normal relative pronouns, do not not have a specific antecedent.
N'importe literally means "no matter" or "(it) doesn't matter." This indefinite expression can precede an interrogative adjective, adverb, or pronoun when talking about something indefinite or non-specific.