
unschön
unpleasant
Unpleasant, unfortunate, or unfair. Often refers to situations, behavior, or events.
Es gab eine unschöne Szene, als die beiden anfingen, sich zu streiten.
There was an unpleasant scene when the two of them started arguing.
unpleasant / unattractive
Loading your saved state.

unpleasant
Unpleasant, unfortunate, or unfair. Often refers to situations, behavior, or events.
Es gab eine unschöne Szene, als die beiden anfingen, sich zu streiten.
There was an unpleasant scene when the two of them started arguing.

unattractive
Not aesthetically appealing; unattractive or ugly.
Der unschöne Betonbau passt nicht in die historische Altstadt.
The unattractive concrete building does not fit into the historic old town.
The word is simply made up of the negating prefix 'un-' and the adjective 'schön' (beautiful). So the literal meaning is 'not beautiful'.
Nach dem Regen war ein unschöner Schmutzrand am Auto zu sehen.
After the rain, an unattractive ring of dirt could be seen on the car.
The meaning depends on whether the word is used literally or figuratively. If it refers to the appearance of things, it means 'ugly'. If it refers to situations, behavior, or events, it means 'unpleasant' or 'unfortunate'.
Der unschöne Fleck auf dem Teppich geht nicht mehr raus.
The unattractive stain on the carpet won't come out anymore.
When 'unschön' is used for a situation, it is often an understatement (litotes). It describes a negative event in a restrained, almost formal way.
Es kam zu einer unschönen Auseinandersetzung zwischen den Kollegen.
There was an unpleasant confrontation between the colleagues.
unpleasant
Both words can describe a negative situation. Unangenehm emphasizes the personal discomfort it causes. Unschön is a milder assessment of the situation or behavior as unpleasant or not acceptable.

Seine kritische Bemerkung vor allen Kollegen war wirklich unschön.
His critical remark in front of all his colleagues was really unpleasant.
Seine kritische Bemerkung war mir vor allen Kollegen unangenehm.
His critical remark made me uncomfortable in front of all my colleagues.