Lacking liveliness, animation, or interest; dull: vapid conversation. (adjective)
Lacking taste, zest, or flavor; flat: vapid beer. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "vapid" in a sentence
"John Mariani, a longtime wine and food writer, predicts a rise in vapid wine blogs."
"Sure, Ann Coulter has proven that being shrill and vapid is no serious barrier to success, but Coulter is at least sporadically witty and entertaining — she can turn a phrase, whether or not she uses it to say much of anything."
"Locale: Staging and dressing together constitute locale and their absence will render it "vague" or "vapid" -- though a writer might, of course, pare away the requisite details deliberately, in the same way they might pare away features distinguishing voice."