'Hollowness' definitions:

Definition of 'hollowness'

From: WordNet
noun
The state of being hollow: having an empty space within [ant: solidity]
noun
The property of having a sunken area
noun
The quality of not being open or truthful; deceitful or hypocritical [syn: insincerity, falseness, hollowness] [ant: sincerity]

Definition of 'Hollowness'

From: GCIDE
  • Hollowness \Hol"low*ness\, n.
  • 1. State of being hollow. --Bacon. [1913 Webster]
  • 2. Insincerity; unsoundness; treachery. --South. [1913 Webster] holloware