Of or pertaining to a tempest; involving or resembling a tempest; turbulent; violent; stormy; as, tempestuous weather; a tempestuous night; a tempestuous debate. -- Tem*pes"tu*ous*ly, adv. -- Tem*pes"tu*ous*ness, n. They saw the Hebrew leader, Waiting, and clutching his tempestuous beard. Longfellow.
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