primitiv
primitive
Simple, not highly developed, or at an early stage of development. It can refer to technology, art, or ways of life.
Die ersten Werkzeuge der Menschen waren sehr primitiv.
Humans' first tools were very primitive.

primitive
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primitive
Simple, not highly developed, or at an early stage of development. It can refer to technology, art, or ways of life.
Die ersten Werkzeuge der Menschen waren sehr primitiv.
Humans' first tools were very primitive.

The two meanings can be distinguished well from context. If 'primitiv' (primitive) refers to objects, technology, or historical cultures, it is usually meant neutrally. If it refers to a person's behavior, it is almost always a negative judgment.
Archäologen fanden primitive Werkzeuge aus der Steinzeit.
Archaeologists found primitive tools from the Stone Age.
In its neutral meaning, 'primitiv' (primitive) is often combined with things that are at an early stage of development. Typical examples are: 'primitive Werkzeuge' (primitive tools), 'eine primitive Hütte' (a primitive hut), or 'primitive Lebensbedingungen' (primitive living conditions).
Sie lebten in einer kleinen, primitiven Hütte im Wald.
They lived in a small, primitive hut in the forest.
When 'primitiv' (primitive) describes a person's behavior or statements, it is a strong insult. It means that the person is uncultured, crude, and lacks good manners.
Ich diskutiere nicht mit Leuten auf so einem primitiven Niveau.
I don't discuss things with people on such a primitive level.
simple / just
'einfach' and 'primitiv' can both describe something as not very developed or not elaborate. However, 'einfach' is usually neutral and often positive: something is easy, clear, or plain. 'primitiv' often sounds negative. For technology or tools, it means that something is at an early or very simple stage. For behavior, 'primitiv' is even an insult and means crude or uncultured. The words can be confused because both can seem to mean 'not complex'. A safer rule is: use 'einfach' for easy or plain things, and 'primitiv' only when you really mean something derogatory or underdeveloped.

Das Gerät wirkt primitiv, weil es nur einen Schalter und keine Anzeige hat.
The device seems primitive because it has only one switch and no display.
Vor der Reise haben wir einen einfachen Plan gemacht.
Before the trip, we made a simple plan.