A shortened version of pretentious, also implies superfluity, especially in writing or actions. Often used to describe hipsters and the literature of high school students in advanced placement English classes.
Tentch Wench: in a single glance, all notions of doubt in her mind were cast aside. The feeling within her heart began as a trickle, like that seeping from the virginal crevices of an as-yet undiscovered mountain spring. It gurgled and bubbled until it frothed into her throat and stomach, finally exploding with the strength of a waterfall. He was just as much in love with her as she was with him.

Bystander: Her writing is so tentch.
by SuedeOhNim July 12, 2012
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