You call a person born in Ireland, Irish.
complains about could
Like you would call any other person.
it explains the complains to king george 3
A person from Maryland is called a Marylander.
Cheap
Kvetch_(Yiddish) or you could refer to them as a scrooge. (: Hope I helped. :)
A challenge and opportunity !
Not every person does this but yes it can.
One choice would be "Pollyanna" from the book (and movie) of that name. She always looked on the bright side.
"Incessantly" is an adverb. It describes the action of an accompanying verb, emphasizing that it is done without interruption.
A person who habitually complains or grumbles.
We worked on the project Incessantly. He studies incessantly all day.
impecunious
incessantly means endlessly; constantly
Your incessantly complaints are haunting me.
It is called addiction to movies. Or the movie must be good.