hollowness

nouns

the state of being hollow: having an empty space within
hollowness
is derived from
hollow
antonym
solidity
is a type of (narrower)
the state of containing nothing
emptiness
the property of having a sunken area
hollowness
is a type of (narrower)
the property possessed by a concave shape
concaveness, concavity
the quality of not being open or truthful; deceitful or hypocritical
falseness, hollowness, insincerity
is derived from
hollow
is derived from
insincere