Third link contains the "intj. masc. of agreeable or disagreeable surprise: really!" I couldn't tell if the letter/symbol after "hu" was a "t" or "+" so I linked it with this slip.
Added/modified by: Catherine Rudin on 5/9/11, 12:00 AM
Solution:
It is a plus sign, indicating the vowel is held out long. So basically this is the same exclamation but a little more emphatic. Should it be considered the same word? I guess so, though it does differ in being labelled
masc.