one-shot 
adjective informal, chiefly North American
1Achieved with a single attempt or action: there is no one-shot solution to the problem...
- For conflicts like these there is no single, quick, one-shot solution, but only an open-ended, evolutionary outcome.
- The most obvious of the lot is the Instant Kill, which is a one-shot, all-or-nothing attempt to knock out your opponent.
- His one-shot feat was achieved in a friendly four-ball using a seven wood.
1.1Done, produced, or occurring only once: a one-shot deal...
- You see, blowing up a plane is kind of a one-shot deal.
- Of course, that was more of a one-shot deal being at Indy for us, although we did run obviously one car in the IRL series last year.
- The course is a one-shot deal that lasts seven hours, $75, at Vanier College.
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