A conjunction of the words "traditional" and "attitude", it is the negative attitude displayed by a number of Traditionalist Catholics.
Traditude can be identified by the "holier-than-thou" mindset displayed towards those who attend the Ordinary Form of Mass, as well as the Mass itself.
Traditionalist Catholic: "The bishop came to our parish for confirmation and was absolutely amazed by our schola. He asked me to teach the Diocesan Choir to sing polyphony and Gregorian Chant. Over my dead body! If THEY want ME to teach them, then THEY need to come and ask ME. I'm not going to offer to help THEM."
TLM New Comer: *Whoa! Lady's got a bad case of traditude.* "Really? It's unfortunate you feel that way. The Diocesan Choir really needs your help. No deacon should have to prostrate himself to the sound of the modernist version of the Litany Of the Saints while Origen is being invoked." *Leaves parish and never returns*
TLM Newbie: "Yeah, I went to the TLM in my old diocese a couple of times, but I couldn't stand being there. Way too much traditude."