verb (used with object), in·ferred, in·fer·ring.
verb (used without object), in·ferred, in·fer·ring.
Although the claimed distinction has probably existed chiefly in the pronouncements of usage guides, and although the use of infer to mean “to suggest” usually produces no ambiguity, the distinction too has a long history and is widely observed by many speakers and writers.
Examples from the Web for inferable
Is it not inferable from this declaration that he then supposed him to be Booth?Assassination of Lincoln: a History of the Great Conspiracy|Thomas Mealey Harris
In the first place, mark what is inferable from the distribution of nebulæ.Essays: Scientific, Political, & Speculative, Vol. I|Herbert Spencer
Of what character this knowledge was is inferable from the sudden self-consciousness that followed the partaking of it.The Soul of the Far East|Percival Lowell
Is it inferable that that coat was ever borne by patent or admissible prescriptive right, by any of his ancestors?
Inferable from these statements, are many collateral subtile matters touching the chase of whales.Moby Dick; or The Whale|Herman Melville