Examples from the Web for knowledgable
She described, as well as she could remember, her meeting with the knowledgable Mr. Mann.The Man Who Knew|Edgar Wallace
The man had been a wise fisherman, as knowledgable as any in Ardevora.Merry-Garden and Other Stories|Sir Arthur Thomas Quiller-Couch
But Hugh Boy was silent as to what he thought of his first knowledgable kiss.Cleg Kelly, Arab of the City|S. R. (Samuel Rutherford) Crockett
British Dictionary definitions for knowledgable
Word Origin and History for knowledgable
also knowledgable, c.1600, "capable of being known, recognizable" (a sense now obsolete), from knowledge in its Middle English verbal sense + -able. The modern sense of "having knowledge, displaying knowledge" is from 1829 and probably a new formation.