Adverb
now or never (not comparable)
(idiomatic, set phrase) At this sole opportunity, or not at all.
now-or-never
Now or never was the time. Laurence Sterne
The battle will decide whether Germany is to live or die. Your soldiers must fight hard and ruthlessly. There must be no pity. The enemy must be beaten, now or never. Thus will live our Germany! Forward to and over the Meuse! Wilhelm Mohnke
Sometimes there is no next time, no time-outs, no second chances. Sometimes it's now or never. Alan Bennett
None can less afford to delay than the aged sinner. Now is the time. Now or never. You have, as it were, one foot already in the grave. Your opportunities will soon be over. Strive, then, I entreat you, to enter in at the strait gate. Archibald Alexander
Today I bought two lottery tickets, because I had a feeling that it would be now or never - they were both blanks. So I am not going to be rich after all. Nothing at all to be done about it. Eva Braun
I danced a lot when I was younger, and I've always had decent, shapely legs and thought it's now or never. I mean, when you're pushing 40, are you really going to wander around in a dress that's midthigh length? Kate Winslet