The Collaborative International Dictionary of English v.0.48:

Prejudgment \Pre*judg"ment\, n.
   The act of prejudging; decision before sufficient
   examination.
   [1913 Webster]

WordNet (r) 3.0 (2006):

prejudgment
    n 1: a judgment reached before the evidence is available [syn:
         prejudgment, prejudgement]

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "prejudgment":
   bent, bias, favoritism, forejudgment, inclination, jaundice,
   jaundiced eye, leaning, one-sidedness, partialism, partiality,
   partisanship, preconception, predilection, prejudice,
   prepossession, twist, undetachment, undispassionateness