permanency
abidingness
age
antiquity
application
assiduity
assiduousness
bulldog tenacity
ceaselessness
changelessness
coeternity
concentration
constancy
continualness
continuance
defeat of time
defiance of time
dependability
diligence
diuturnity
dogged perseverance
doggedness
durability
durableness
duration
endlessness
endurance
engrossment
eternalness
eternity
ever-duringness
everlastingness
everness
fidelity
fixedness
fixity
fixture
foreverness
immovableness
immutability
incessancy
incommutability
indefatigability
indefeasibility
indestructibility
industriousness
industry
length
enduringness
immortality
imperishability
imperishableness
imperishingness
lastingness
perdurability
perpetuity
sempiternity
strength
permanent
coherence
cohesion
completeness
continuity
correctness
fairness
purity
solidity
soundness
stability
tranquillity
uniformity
unity
universality
usefulness
well-being
impermanence
transience