Philistinism
abstruseness
arduousness
armor
asperity
astringency
austerity
bothersomeness
burdensomeness
callosity
callousness
callus
closeness
cohesiveness
coldbloodedness
coldheartedness
coldness
compactness
complexity
complication
congestedness
congestion
consistence
consistency
crabbedness
crampedness
crowdedness
cruelty
deepness
denseness
density
difficultness
difficulty
durability
esoterica
firmness
flintiness
formidable defenses
fundamentalism
gluiness
grimness
hairiness
hard heart
hard shell
hardenedness
hardheartedness
hardiness
hardness of heart
quality
sternness
strictness
arrogance
boldness
brightness
clearness
coolness
dryness
ferocity
fineness
harshness
indifference
lightness
obstinacy
rigidity
roughness
selfishness
severity
sharpness
softness
solidity
stiffness