persistent
unrelenting
relentless
eonian
not while pussy's a cat
when two Sundays come together
never-dying
nevah
never ever
when two Sundays meet
uneverted
Nevuary
nooit
⠐⠑
deathless
undying
semper-
unperpetual
unabiding
fadelessness
immortality
perpetuous
nonasterisked
nonperpetual
uncheckered
in no way
infinitely
endlessly
unremitting
unstraying
nonrestrained
foreverness
unprostrated
everlastingly
sempiternous
uniterable
intentionless
⠁⠇⠺
perpetually
break even
nonenduring
unperpetuated
unexpeditated
unconstant
untolerised
impermanent
undiscarded
nonapertured
unticked
unpersevering