undiplomatic (adjective)

1. The comedian's undiplomatic remarks caused the audience to cringe instead of laugh.

2. The protagonist's undiplomatic behavior in the show resulted in conflicts with other characters.

3. The undiplomatic approach of the ruler led to strained relations between two nations, eventually leading to war.

4. The undiplomatic design of the building failed to reflect the surrounding environment and clashed with the neighboring structures.