precautional

from WordNet (r) 3.0 (2006)

precautional
    adj 1: taken in advance to protect against possible danger or
           failure; "gave precautionary advice"; "I would take
           precautionary steps to keep him away" [syn:
           {precautionary}, {precautional}]

from The Collaborative International Dictionary of English v.0.48

Precautional \Pre*cau"tion*al\, a.
   Precautionary.
   [1913 Webster]