abidingness
acceptance
age
antiquity
application
assiduity
assiduousness
bulldog tenacity
changelessness
concentration
constancy
continualness
continuance
continuation
continuity
decisiveness
defeat of time
defiance of time
diligence
diuturnity
dogged perseverance
doggedness
durability
durableness
duration
energy
engrossment
extension
fidelity
firmness
fixedness
forbearance
forbearing
forbearingness
force
fortitude
frozenness
guts
gutsiness
hardening
hardiness
heartiness
immobility
immovability
immovableness
immutability
indefatigability
indulgence
boldness
bravery
determination
gentleness
honesty
ingenuity
patience
perseverance
self-control
self-sacrifice
stamina
tenacity
vigor