Source : Webster's Revised Unabridged Dictionary (1913)

Doughty \Dough"ty\, a. [Compar. {Doughtier}; superl.
   {Doughtiest}.] [OE. duhti, dohti, douhti, brave, valiant,
   fit, useful, AS, dyhtig; akin to G. t["u]chtig, Dan. dygtig,
   Sw. dygdig virtuous, and fr. AS. dugan to avail, be of use,
   be strong, akin to D. deugen, OHG. tugan, G. taugen, Icel. &
   Sw. duga, Dan. due, Goth. dugan, but of uncertain origin; cf.
   Skr. duh to milk, give milk, draw out, or Gr. ? fortune. ?.]
   Able; strong; valiant; redoubtable; as, a doughty hero.

         Sir Thopas wex [grew] a doughty swain.   --Chaucer.

         Doughty families, hugging old musty quarrels to their
         hearts, buffet each other from generation to
         generation.                              --Motley.

   Note: Now seldom used, except in irony or burlesque.

Source : WordNet®

doughty
     adj : resolute and without fear [syn: {fearless}, {hardy}]
     [also: {doughtiest}, {doughtier}]

doughtier
     See {doughty}