persistency
abidingness
accordance
adhesiveness
age
antiquity
application
assiduity
assiduousness
bulldog tenacity
bullheadedness
calm
changelessness
cohesiveness
commitment
concentration
consistency
consonance
constancy
continualness
continuance
continuation
continuity
correspondence
course
decidedness
decision
decisiveness
dedication
defeat of time
defiance of time
definiteness
demandingness
determinateness
determination
determinedness
devotion
diligence
diuturnity
dogged perseverance
doggedness
durability
durableness
duration
earnestness
endurance
engrossment
equability
equanimity
enduringness
lastingness
purpose
strength
boldness
bravery
courage
directness
ferocity
ingenuity
obstinacy
perseverance
pertinacity
tenacity
thoroughness
vigour
assistance
coexistence
consistence
distance
existence
insistence
outdistance
resistance
resistence
subsistence