waitmonger

Best definition
waitmonger
adj. a person who makes you wait either for a long time, or repeatedly. From the word ‘hatemonger’ but instead

of arousing hate, this person creates wait periods. Typically, a drug dealer is a waitmonger. Even better, doctors are waitmongers (but they’re pretty much drug dealers too, innit?)

“What’s taking this #@$% waitmonger so %#@& long?!!!”