Big Huge Thesaurus

hollowness

noun

• insincerity
• falseness
• concaveness
• concavity
• emptiness
• untruthfulness

antonyms

• sincerity
• solidity

sounds kind of like

• haleness
• hallowmas
• hallowmass
• hauling
• healing
• heilong
• helen hayes
• hellenic
• helwingia
• hilliness
• holiness
• holm oak
• holmes
• howling