The Collaborative International Dictionary of English v.0.48:

Unresisting \Unresisting\
   See resisting.

WordNet (r) 3.0 (2006):

unresisting
    adj 1: offering no resistance; "resistless hostages"; "No other
           colony showed such supine, selfish helplessness in
           allowing her own border citizens to be mercilessly
           harried"- Theodore Roosevelt [syn: resistless,
           supine, unresisting]