Webster’s Revised Unabridged Dictionary · 1913
Vapid
Vap′id (văp′ĭd), a. [L. vapidus having lost its lire and spirit, vapid; akin to vappa vapid wine, vapor vapor. See Vapor.] 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.