The Collaborative International Dictionary
Vapid \Vap"id\, 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.
[1913 Webster] -- Vap"id*ly, adv. -- Vap"id*ness, n.
Wiktionary
adv. In a vapid manner; insipidly; pointlessly; not inspiring; in a manner unlikely to make an impression.
WordNet
adv. in a vapid manner; "a vapidly smiling salesman"
Usage examples of "vapidly".
Lately, the Tycoon had been so much serenaded at the White House that he had come to the conclusion that the only entirely painful form of speech-making was responding, vapidly, to a serenade.