Placement of the negator (niet)

Negating Adjectives and Adverbs

In Dutch, niet (not) negates verbs, adjectives, and adverbs. Place it directly before the adjective or adverb you want to negate.

The earth is not flat.
De aarde is niet plat.
The sun is very hot, but the moon is not hot.
De zon is erg heet, maar de maan is niet heet.

Before Prepositional Phrases

When a sentence includes a prepositional phrase (like a location or direction), niet goes right before the preposition.

The sun does not revolve around the earth.
De zon draait niet om de aarde.
Astronauts do not walk on the moon without their coat.
Astronauten lopen niet op de maan zonder hun jas.

After Definite Objects

If a sentence has a definite direct object (one using de, het, die, deze, or a possessive pronoun), niet goes after the object.

We do not understand the universe entirely.
Wij begrijpen het heelal niet helemaal.

At the End of the Clause

If a clause just has a subject and a verb, niet falls at the very end.

We do not float, because we are on the earth.
Wij zweven niet, want wij zijn op de aarde.
That planet does not exist, because we see nothing.
Die planeet bestaat niet, want wij zien niets.