Examples from the Web for knowledgeable
This might not fool a knowledgeable whiskey drinker, but how many of those desperate for Pappy are knowledgeable whiskey drinkers?
Chatty, engaging and knowledgeable, cabbies in Hong Kong are also avid listeners of discussion programs on local radio.
According to a knowledgeable source, Friel has known Goodell professionally for a few years.
As one knowledgeable observer pointed out “why give the chattering class something to chatter about?”Democrats Are Ready to Let Hillary Deliver a Knockout Blow in Iowa|Ben Jacobs|February 19, 2014|DAILY BEAST
The bartenders can be hit or miss, but for the most part they are all friendly, fast, attentive, and knowledgeable.Best Broncos and Seahawks Bars to Watch Super Bowl XLVIII|Justin Jones|January 29, 2014|DAILY BEAST
But as far as I know, he had no knowledgeable conversation with anyone there.
So t' Colonel's Laady sends for me as 'ad a naame for bein' knowledgeable about a dog, an' axes what's ailin' wi' him.Soldiers Three|Rudyard Kipling
Mr. Chard, that knowledgeable man of the world, exuded not at all by chance the impression of great quantities of available cash.Gone Fishing|James H. Schmitz
I developed at this time the impression that he really had no knowledgeable background at all of Marxism.
To excel in the management of a squad, the leader must be knowledgeable of all that bears upon the command of a platoon.The Armed Forces Officer|U. S. Department of Defense
British Dictionary definitions for knowledgeable
Word Origin and History for knowledgeable
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.