What does "vapid" mean?

Vapid: Having lost its life and spirit; dead; spiritless; insipid; flat; dull; unanimated; as, vapid beer; a vapid speech; a vapid state of the blood. A cheap, bloodless reformation, a guiltless liberty, appear flat and vapid to their taste. Burke. -- Vap"id*ly, adv. -- Vap"id*ness, n.