perdurance
perseverating
dogged
sticktoitiveness
persistence
persistently
ongoingness
sedulity
persistingly
ident
perseverantly
restant
longevity
sticky
inveteracy
hold
persisting
relentless
abiding
on
persistiveness
perpetuous
perseverant
transtemporal
continuality
onholding
push on
uninterrupted
sticktoitive
steady-going
lingeringly
steadiness
running
persevering
press on
if at first you don't succeed
perpetual
everlasting
perseveringly
nonpersistence
perseveration
perseverance
unceasing
perdurability
persistency
endurableness
resting
persist
if at first you don't succeed, try try again
noncontinuity