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What to say to a person who criticizes another for having the same problem they have but denies it.
A person who makes of
collecter
A person who hoards things that you have would be called..."you." Or whatever your name is.
A person who looks on the gloomy side of things is pessimistic.
Antinous is the person who denies food to Odysseus during the feast in book XVII of the Odyssey.
You could call them generous or a recipient or a patron.
Human.
An idiot.
A sybarite.
Smart
A person who ignores important things could be described as apathetic, negligent, or careless.