when two Sundays meet
never ever
nevah
not while pussy's a cat
when two Sundays come together
nooit
unreddened
never've
when Hell freezes over
future-day
Neveruary
when pigs fly
at no time
if pigs had wings
at latter Lammas
at the earliest
uneverted
pre-dead
NN
nary
in a pig's eye
unreached
ungained
no longer
only
no more
only when
only if
at the latest
unforeseen
futurity
future
seldomly
time to come
nonpending
hereafter
unborn
nothing like
nevermore
nonemerging
under no circumstances
unmade
previable
nontillable
unchanced
unslaked
untillable
in no way
no fear
second Tuesday of the week