prefixed to make an honorific kanji compound, especially used to indicate that the [word] belongs or is related to the emperor and/or the equivalents

honorable

drunkard

(slang) communication between people drinking together

an online drinking party; an event in which participants drink alcohol or other beverages while chatting online

to chug; to down

chugging; downing

drinking party

all you can drink

visiting to ask after someone's health / letters or gifts presented when doing so