WordNet (r) 3.0 (2006):

unadapted
    adj 1: not changed in form or character for a purpose
    2: not having adapted to new conditions; "several unadjusted
       refugees" [syn: unadapted, unadjusted]

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "unadapted":
   disqualified, ill-adapted, ill-assorted, ill-chosen, ill-equipped,
   ill-fitted, ill-furnished, ill-matched, ill-provided,
   ill-qualified, ill-sorted, ill-suited, ill-timed, improper,
   inadequate, inadmissible, inapplicable, inapposite, inappropriate,
   inapt, incapable, incompetent, ineffective, ineffectual, inept,
   infelicitous, irrelevant, mal a propos, maladjusted, malapropos,
   misjoined, mismatched, mismated, misplaced, not equal to,
   not up to, out of character, out of joint, out of keeping,
   out of line, out of place, out of proportion, out of season,
   out of time, out of tune, unable, unadjusted, unapt, unarmed,
   unbecoming, unbefitting, unequipped, unfit, unfitted, unfitting,
   unprovided, unqualified, unseasonable, unseemly, unsuitable,
   unsuited, untimely