discourteous

/dɪsˈkɜrtiəs/
adjective
  1. Rude or showing a lack of respect for others.
    • It was discourteous of him to interrupt the speaker.
    • She received a discourteous reply to her polite question.
    • Leaving without saying goodbye is considered discourteous in many cultures.
What does "discourteous" mean? | whatsthatwordmean | whatsthatwordmean