perpetually
forevermore
in perpetuity
always
unto the ages of ages
ad infinitum
all along
ever after
with ages
forever
endlessly
forever and a day
of all time
e'er
ever
world without end
forever after
neverendingly
pro tem
pro tempore
evar
eonian
year in, year out
for all practical purposes
to all intents and purposes
eternally
till doomsday
entodermic
for all intents and purposes
sempiternous
⠐⠑
longest
donkey's ears
donkey's years
in all one's born days
unfailingly
perennialize
evermore
permanently
for good
permanent
anytime
annually
unbrokenly
ageless
illimitedly
everywhen
everlastingly
perpetual
immanently