Ap·prox·i·ma·tive a.  Approaching; approximate.  -- Ap*prox*i*ma*tive*ly, adv. -- Ap*prox*i*ma*tive*ness, n.
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  approximative
       adj : not quite exact or correct; "the approximate time was 10
             o'clock"; "a rough guess"; "a ballpark estimate" [syn:
             approximate, rough]