Tem*pes"tu*ous (?), a. [L. tempestuous: cf. OF. tempestueux, F. tempetueux.]
Of or pertaining to a tempest; involving or resembling a tempest; turbulent; violent; stormy; as, tempestuous weather; a tempestuous night; a tempestuous debate.
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Tem*pes"tu*ous*ly, adv. --
Tem*pes"tu*ous*ness, n.
They saw the Hebrew leader,
Waiting, and clutching his tempestuous beard.
Longfellow.
© Webster 1913.