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