Used with adjective complement

• seem: Among friends we take liberties or say things that would seem discourteous among strangers.

Modifying Another Word

• so: I hated to be so discourteous but the only solution was to ignore them.

• extremely: Frame trapping is extremely discourteous, as it prevents the visitor from easily seeing the URL of the site you've linked to.

• also: It is also discourteous toward those philosophers whose thinking one can, without refined knowledge of linguistic nuances, only pretend to study.

• very: He expresses himself in very discourteous terms about you, my dear Comrade Radek.