noun
1. the state of being hollow: having an empty space within (Freq. 1)
• Ant: ↑solidity
• Derivationally related forms: ↑hollow
• Hypernyms: ↑emptiness
2. the property of having a sunken area
• Hypernyms: ↑concavity, ↑concaveness
3. the quality of not being open or truthful; deceitful or hypocritical
• Syn: ↑insincerity, ↑falseness
• Ant: ↑sincerity (for: ↑insincerity)
• Derivationally related forms: ↑hollow, ↑insincere, ↑false (for: ↑falseness), ↑insincere (for: ↑insincerity)
• Hypernyms: ↑untruthfulness
• Hyponyms: ↑hypocrisy
Useful english dictionary. 2012.