Source : Webster's Revised Unabridged Dictionary (1913)

Chaotic \Cha*ot"ic\ (k[asl]*[o^]t"[i^]k), a.
   Resembling chaos; confused.

Source : WordNet®

chaotic
     adj 1: lacking a visible order or organization [syn: {helter-skelter}]
     2: completely unordered and unpredictable and confusing [syn: {disorderly}]
     3: of or relating to a sensitive dependence on initial
        conditions