omniabsent
nonexistent
has left the building
nowhence
nevah
when two Sundays meet
when two Sundays come together
when Hell freezes over
uneverted
not while pussy's a cat
never ever
unstayed
only when
only
nonpresent
only if
unvanished
out of thin air
down to
nonabsent
all-victorious
nowhere to be found
unlingering
non-coming
impassive
Nothingville
unprecedented
stock-still
betwixt and between
seldomly
null
momentary
unpausingly
unwitnessed
in no way
eternal
unbegun
destitute
at rest
uncoupled
unlivened
undisestablished
under no circumstance
unknowingly
never
unsituated
unbeheld
findless
unshifted
unwaited