- once
- adv1. formerly, previously, aforetime, at one time, before now, Archaic. erenow, heretofore; some time back, some time ago, awhile ago; long ago, in the old days, in the good old days, years ago, ages ago, before you were born, once upon a time.2. single time, one time, on one occasion.3. ever, at any time, at a single time; possibly, by chance, by a fluke.4. once and for alldecisively, positively, decidedly, finally, conclusively, determinately.5. once in a whileat intervals, periodically, occasionally, sometimes, at times, from time to time, now and then, every now and then.6. once or twicevery few times, very little, infrequently, hardly ever, rarely, sporadically.n7. single occasion, single time, one time only.8. at oncea. together, simultaneously, at the same time, at one and the same time, in the same instant, in the same breath.b. immediately, right away, straightway, straightaway, directly, forthwith; promptly, posthaste, without delay, instantly, on the spot; in no time, in less than no time, Inf. before you can say Jack Robinson, in the twinkling of an eye, quick as a bunny, in a second, in a moment, in a minute.
A Note on the Style of the synonym finder. 2014.