Without a date fixed (as of an adjournment).

Roget 107: never, ne'er [Contr.]; at no time, at no period; on the second Tuesday of the week, when Hell freezes over; on no occasion, never in all one's born days, nevermore, sine die; in no degree.   

Roget 133: late; lateward^†, backward; late in the day; at sunset, at the eleventh hour, at length, at last; ultimately; after time, behind time, after the deadline; too late; too late for etc. 135.    slowly, leisurely, deliberately, at one's leisure; ex post facto; sine die.    ... meer laten zien