Source : Webster's Revised Unabridged Dictionary (1913)

Termagant \Ter"ma*gant\, a.
   Tumultuous; turbulent; boisterous; furious; quarrelsome;
   scolding. -- {Ter"ma*gant*ly}, adv.

         A termagant, imperious, prodigal, profligate wench.
                                                  --Arbuthnot.