unhöflich
impolite
Not following the rules of good manners; inconsiderate or disrespectful in dealing with other people.
Es ist unhöflich, jemanden beim Sprechen zu unterbrechen.
It is impolite to interrupt someone while they are speaking.

impolite
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impolite
Not following the rules of good manners; inconsiderate or disrespectful in dealing with other people.
Es ist unhöflich, jemanden beim Sprechen zu unterbrechen.
It is impolite to interrupt someone while they are speaking.

The word is the direct negation of 'höflich' (polite) with the prefix 'un-'. 'Höflich' itself derives from 'der Hof' (the court) and originally described good manners at court.
Sein Verhalten gegenüber den Älteren war wirklich unhöflich.
His behavior toward the elderly was really impolite.
To describe an action as impolite, the impersonal construction 'Es ist unhöflich, ...' (It is impolite to ...) is often used with an infinitive clause with 'zu'.
Es ist unhöflich, während des Essens mit dem Handy zu spielen.
It is impolite to play with your phone during a meal.
When you want to say whom someone is impolite to, you use the preposition 'zu' with the dative.
Warum warst du gestern so unhöflich zu unseren Gästen?
Why were you so impolite to our guests yesterday?
friendly
'freundlich' and 'unhöflich' are opposites when it comes to dealing with people. 'freundlich' describes a nice and pleasant manner. 'unhöflich' describes behavior that violates good manners or respect, for example interrupting someone or not greeting them. The words can confuse learners because 'unhöflich' does not just mean 'not friendly', but especially comes across as 'badly behaved' or disrespectful. So someone can be not very warm without immediately being impolite. 'freundlich' is nice in tone, while 'unhöflich' is more about breaking social rules.

Nach dem Gespräch fand Anna es unhöflich, dass der Mann einfach weggegangen ist.
After the conversation, Anna thought it was impolite that the man had simply walked away.
Bitte sprich freundlich mit der Ärztin, auch wenn du lange warten musst.
Please speak kindly to the doctor, even if you have to wait a long time.