Ikke stirr på meg.

Because this is a negative command. In Norwegian, negative imperatives are commonly formed with ikke + imperative:

• Stirr på meg. = Stare at me.
• Ikke stirr på meg. = Don’t stare at me.

So even though ikke often comes later in other sentence types, in this kind of command it normally comes first.

Stirr is the imperative form of å stirre (to stare).

A very common way to make the imperative in Bokmål is to remove the infinitive ending -e:

• å stirre → stirr
• å snakke → snakk
• å vente → vent

So stirr! means stare!

Because commands in Norwegian usually leave out the subject, just like English often does.

Compare:

• English: Don’t stare at me.
• Norwegian: Ikke stirr på meg.

The you is understood. Depending on context, it could mean you singular or plural.

Because the verb stirre normally takes the preposition på when you say who or what someone is staring at:

• stirre på noen = stare at someone
• stirre på noe = stare at something

So på meg literally means at me. This is just the normal pattern of the verb.

Because meg is the object form of the pronoun, while jeg is the subject form.

• jeg = I
• meg = me

After a preposition like på, Norwegian uses the object form:

• på meg = at me
• med meg = with me
• til meg = to me

So på jeg would be wrong.

No. Stirre is much stronger than se.

• se på = look at
• stirre på = stare at

So Ikke stirr på meg sounds stronger and more specific than Ikke se på meg. It suggests a fixed, prolonged, or rude kind of looking.

It sounds direct and can easily sound annoyed, defensive, or uncomfortable, depending on the situation.

It would fit contexts like:

• someone is making you uncomfortable
• you are embarrassed
• someone is obviously staring

If you wanted to make it softer, you might say something like:

• Kan du la være å stirre på meg? = Could you stop staring at me?
• Kan du være så snill å ikke stirre på meg? = Could you please not stare at me?

So the original sentence is natural, but not especially gentle.

It can be used for either. The imperative form itself does not show singular or plural.

So Ikke stirr på meg could mean:

• Don’t stare at me. (to one person)
• Don’t stare at me. (to several people)

Usually the situation makes it clear who is being addressed.

Because it comes directly from the verb stirre. When the infinitive ending -e is removed, the rr stays:

• stirre → stirr

This spelling also reflects the structure of the word in Norwegian. For a learner, it may look unusual at first, but it is the normal imperative form.

Yes.

• Ikke stirr på meg. feels neutral in writing.
• Ikke stirr på meg! feels stronger, sharper, or more emotional.

Both are correct. The punctuation just changes the tone.

The normal basic form is Ikke stirr på meg.

That is the pattern learners should remember for a negative command. Other word orders are possible in special, more emphatic sentences, but they are not the basic structure. If you want the standard, natural version, use:

Ikke + imperative + rest of sentence