discourteously is a form of:

Discourteous



adjective
1.
ដែលមិនគួរសម
Example: it was discourteous of you to arrive late.
1.
blunt, gruff, impolite, impudent, insolent, rough, rude, saucy, uncivil, vulgar
2.
coarse, crude, ignorant, savage, fierce, harsh, tumultuous