solidity
stability
steadfastness
changelessness
unchangeability
unchangeableness
unchangingness
blankness
bloodlust
calmness
cautiousness
continuousness
deglutition
fixity
froid
immobility
maid-of-honour
parlourmaid
persistency
redskin
singleness
spontaneousness
staidness
swallowtail
wistfulness