Adjective : an articulate speaker. ,an articulate thought. ,an articulate form; an articulate shape; an articulate area. ,an articulate image. ,an articulate system of philosophy.    From Dictionary.com. 

Verb (used with object) : to articulate a shape; to articulate an idea. ,an injection to articulate arteries so that obstructions can be observed by x-ray.    From Dictionary.com. 

Verb (used without object) : to articulate with excessive precision.    From Dictionary.com. 

He is very articulative and has a very good relation with lot of conservatives.    From Wordnik.com.  [Latest Articles] Reference

"Mr. Chairman and prize goose, -- The feelings which now agitate my sensorium on this Michaelmasian occasion stimulate the vibratetiuncles of the heartiean hypothesis, so as to paralyse the oracular and articulative apparatus of my loquacious confirmation, overwhelming my soul-fraught imagination, as the boiling streams of liquid lava, buried in one vast cinereous mausoleum -- the palace-crowded city of the engulphed Pompeii.    From Wordnik.com.  [Punch, or the London Charivari, Volume 1, October 2, 1841] Reference