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Made up, fabricated. Something which sounds true but has no basis in fact or reality.

A casual lie, or rash claim easily proven to be false by a simple Google search. An ill informed claim might be said to be temious.
Etymology: From Latin temeritās (“chance, accident, rashness”) < temerē (“by chance, casually, rashly”).
His temious claims were believed by all but the more educated among us.

While his statement sounded rational and to the point, minor research proved them to be completely temious.
by Sidheman September 21, 2011
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