Definitions for vapidly
Random House Webster's College Dictionary
lacking spirit or interest; dull:
lacking sharpness or flavor.
Origin of vapid:
1650–60; < L vapidus; akin to vapor
in a vapid manner
"a vapidly smiling salesman"
In a vapid manner; insipidly; pointlessly; not inspiring; in a manner unlikely to make an impression.
The three bored, interchangeable booth babes winked and flirted vapidly; he had already forgotten their names.