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The extreme version of a hater

Someone who dislikes everything and everyone and constantly voices his criticism of everything/everyone. This person is often angry with others for offending him in some way and his CONSTANT griping will mark him as a "hate-asaurus rex" rather than merely a "hater." Additionally, a hate-asaurus rex typically calls other people "haters" in an effort to disguise his "hater" comments.
Anthony: Stop being mean to me; you are such a hater! Why'd you don't look good in shorts OR skirts! (...and this type of person would keep complaining...)

Gina: Hey! Stop being such a hate-asaurus rex!
by newjerseyhater June 25, 2009
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