A good intro to various (small, 7 to 10 dimensional) standard bases of personality descriptors is Making Sense of People: http://www.amazon.com/dp/B0050JKCI6
Plus, some of the attributes depend on the person observing. People have widely varying likability based on who they are around. (e.g. "knows how to comfort me when I'm sad" or "quality of goodnight hug" or "their voice makes me want to tape their mouth shut and throw them in an active volcano")
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