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1.
more than "hot" or "hott"
the more "t"s the better
omg emo boys are freaking hottt
by typing w1th #'s1s 27up1d March 16, 2006
 
2.
Acronym meaning "holding on to the thermometer"
It is HOTTT out today. That's HaWT!
by Matt Margolis August 25, 2004
 
3.
sexy or sexay refers to a girl named holly
holly is very hottt.
by Matt May 17, 2004