mulishly

from WordNet (r) 3.0 (2006)

mulishly
    adv 1: in a stubborn unregenerate manner; "she remained
           stubbornly in the same position" [syn: {stubbornly},
           {pig-headedly}, {obdurately}, {mulishly}, {obstinately},
           {cussedly}]

from The Collaborative International Dictionary of English v.0.48

Mulish \Mul"ish\ (m[=u]l"[i^]sh), a.
   Like a mule; sullen; stubborn. -- {Mul"ish*ly}, adv. --
   {Mul"ish*ness}, n.
   [1913 Webster]

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