The phrase "a certain bet" is correct and usable in written English.
It can be used when referring to a specific wager or gamble that is somewhat uncertain or not guaranteed to win.
Example: "In this unpredictable market, investing in tech stocks seems like a certain bet for long-term growth."
Alternatives: "a safe wager" or "a reliable gamble".
It is a safe, though not a certain, bet that the remaining mysteries will resolve just as mundanely.
The bureau's director must face Senate confirmation - not a certain bet for Ms. Warren, a noted consumer advocate who has attacked financial firms over risky lending practices.
Theoretically, you are able to control events at a poker table, where you're able to make controlled decisions – such as wagering a certain bet, at a certain time, in an otherwise uncontrollable environment.
Of course like any stock picking strategy, value is not a always a certain bet.
When you have a chance to have a horse that can run at Cheltenham, you take it - and you can pretty much have a certain bet he'll be the first one over the first hurdle.
Thrown on the defensive by sexual harassment allegations from former female staffers, Rep. Jim Bates (D-San Diego), once considered a certain bet for reelection, finds himself in jeopardy as the race in his heavily Democratic district enters the final week.
I tend to watch the qualifiers on the live-streaming of a certain betting site with the number of days of the year in its name.
If a factory is to be built that will actually make something and possibly sell some of its products abroad, it's a pretty certain bet it will have to be financed by foreign capital.
But if the Congress passed legislation to repeal it, it is a 100% certain bet that the president will flash his veto.
With the Trump administration and Republicans in Congress constantly threatening the ACA's individual coverage known as Obamacare as well as the ACA's Medicaid expansion, a more certain bet for health insurers these days could be in administering Medicare benefits for seniors.
And the 25-year-old looks an increasingly certain bet to do just that, effectively winning his semi-final tonight before halfway and almost jogging down the home straight to win in 20.18 seconds.
