doomsday
We'll be here until doomsday if you don't get a move on!
I was starting to think that the legal proceedings might go on until doomsday.
The demand for her services is so great that she is now fully booked till doomsday.

SMART Vocabulary: related words and phrases

Lasting for a long time
all-night
ancient
be going strongidiom
changeless
dateless
incorruptibility
incorruptible
incorruptibly
languish
lasting
nondurable
nondurable goods
of oldidiom
old
ongoing
timelessly
timelessness
unslaked
venerably
year