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Use "unvented" in a sentence
"The entire lab stank from chemicals in unvented storage cabinets, and became lachrymatory when reactions using excess ethyl bromoacetate had to be worked up outside the hood."
"(or "unvented" as the late lamented EZ would say, although in reference to knitting rather than to words) some who know far more about this sort of thing than I do"
"I have no idea whether the Duke Barnim socks were found before EZ unvented the arch herself; she certainly did it before Rutt's book was in print."