1. [adj]  (grammar) expressing or preceding an inference; "`therefore' is an illative word"
2. [adj]  resembling or dependent on or arrived at by inference; "an illative conclusion"; "inferential reasoning"
3. [adj]  relating to or having the nature of illation or inference; "the illative faculty of the mind"

ILLATIVE is a 8 letter word that starts with I.

1. \Il"la*tive\, a. [L. illativus: cf. F. illatif.]
   Relating to, dependent on, or denoting, illation;
   inferential; conclusive; as, an illative consequence or
   proposition; an illative word, as then, therefore, etc.
   
   {Illative conversion} (Logic), a converse or reverse
      statement of a proposition which in that form must be true
      because the original proposition is true.
   
   {Illative sense} (Metaph.), the faculty of the mind by which
      it apprehends the conditions and determines upon the
      correctness of inferences.
   
   

2. \Il"la*tive\, n.
   An illative particle, as for, because.