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