What is the difference between "jemand" and "niemand" in German?

Jemand means "someone" or "anyone," and niemand means "no one" or "nobody." They are used for people , not things, and in spoken German their endings are often left out unless the grammar requires them.

When should I use "etwas" and "nichts"?

Use etwas for "something" and nichts for "nothing." These pronouns refer to things and are invariable , which means they do not change form.

What is the difference between "man," "alle," and "alles"?

Man means a general "one" or "people in general": Man darf hier nicht rauchen. Alle means "all/everyone" for plural people, while alles means "everything" as a singular concept.

Indefinite Pronouns — Being Vague ☁️🤷

Indefinite pronouns refer to non-specific people, things, or quantities (someone, nothing, everything). Common German examples include jemand (someone), niemand (no one), etwas (something), and nichts (nothing). Some of these take declension endings, while others remain fixed.

Infographic explaining German Indefinite Pronouns like jemand (someone) and niemand (no one).

Sometimes you don't know WHO did it. Or you want to be general.
"Someone ate the cake." "Nobody knows."

The Big Four 🍀

1. Jemand (Someone) / Niemand (No one)

Used for people.

Ist hier jemand? (Is anyone here?)
Hier ist niemand. (No one is here).

They can take endings (Jemanden, Niemandem), but in spoken German, we often leave them blank.

Ich sehe niemanden. (Accusative).

2. Etwas (Something) / Nichts (Nothing)

Used for things. They NEVER change form.

Ich möchte etwas essen.
Ich habe nichts gemacht.

3. Man (One/People)

The general "you/people/society".

Man darf hier nicht rauchen. (One is not allowed to smoke here).
Was kann man hier machen? (What can people do here?)

[!CAUTION]
Man vs Mann

Der Mann (The man) = Male human. 👨

man (one) = General pronoun. 🤷
Pronunciation is identical! Context tells the story.

4. Einer / Keiner (One / None)

Used to refer to countable nouns without repeating them.

Hast du einen Stift? (Do you have a pen?)
Nein, ich habe keinen. (No, I have none).
Ja, hier ist einer. (Yes, here is one).

Note how they pick up the gender of "Stift" (Masculine)!

Hast du eine Tasche? (Fem) -> Ich habe keine.

Summary Table

What?	Pronouns
People	jemand, niemand, man, einer
Things	etwas, nichts, alles, welches

Deep Dive: All vs Everything 🌌

Alles: Everything (singular concept). Alles ist gut.
Alle: Everyone/All (plural people). Alle sind hier.
Ganz: Whole/Entire. Der ganze Kuchen. (The whole cake).
Jeder: Each/Every (singular). Jeder Student.

Confusion Alert:

All people -> Alle.

Whole day -> Der ganze Tag. (Not Alle Tag).

Every day -> Jeden Tag.