insincerity
treachery
unsoundness
concaveness
concavity
emptiness
artificiality
falseness
falsity
frivolity
futility
heartlessness
hypocrisy
inadequacy
inferiority
insignificance
insufficiency
lassitude
meanness
narrowness
rottenness
shallowness
slenderness
superficiality
triviality
unreality
untruth
unworthiness
worthlessness