approximative

from WordNet (r) 3.0 (2006)

approximative
    adj 1: not quite exact or correct; "the approximate time was 10
           o'clock"; "a rough guess"; "a ballpark estimate" [syn:
           {approximate}, {approximative}, {rough}]

from The Collaborative International Dictionary of English v.0.48

Approximative \Ap*prox"i*ma*tive\, a. [Cf. F. approximatif.]
   Approaching; approximate. -- {Ap*prox"i*ma*tive*ly}, adv. --
   {Ap*prox"i*ma*tive*ness}, n.
   [1913 Webster]

[email protected]