good bet

good bet

1. Something that is certain to occur. Based on his grades, it's a pretty good bet that Harry won't be able to graduate on time.
2. A person or thing that is certain to be good or successful. The department felt that she was a good bet for the account manager position.
See also: bet, good
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

(a) good bet

Fig. a great likelihood. It's a good bet that he will be late because of the rain.
See also: bet, good
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

a good bet

or

a safe bet

COMMON
1. If something is a good bet or a safe bet, it is a sensible or useful thing to do or use. If you're after something smart to wear to a friend's wedding, a dark suit has to be a good bet. When you're unfamiliar with your guests' likes and dislikes, chicken is a safe bet for the main course. Note: You can also say that something would be a better bet or a safer bet, meaning that it would be more sensible or useful than another possibility. I was going to buy an apartment but I'm now thinking a house might be a better bet. Basing a drama series on a book is a far safer bet than commissioning a brand new one. Note: You can also say that something is someone's best bet or safest bet, meaning that it is the most sensible or useful thing to do. If you really want to keep your home safe from robbery, your best bet is still to buy a dog.
2. If something is a good bet or a safe bet, it is very likely to happen. With these players, Leeds United look a good bet to reach the final for the first time since 1978. They won't enjoy reading this book; it's a safe bet that few will read more than 100 pages.
See also: bet, good
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
See also:
References in classic literature ?
Garth when Mary was likely to be come home again)-- he had those ten pounds in his mind as a fund from which he might risk something, if there were a chance of a good bet. Why?
The Rob Rinder Verdict (Channel 4, 10pm-11.05pm) If you're a fan of Judge Rinder, there's a good bet you'll already have made a note in your diary regarding this new series.
AUSTIN HEALEY has delivered his verdict on Wales' hopes for the World Cup later this year - backing them as a "good bet".
Turning to the World Cup in Japan later this year, he said: "I said a long time ago, and people won't believe this, that Wales are a really good bet for the World Cup.
Home Of The Brave looks a good bet to repeat last year's victory in the totepool EBF Stallions King Richard III Stakes at Leicester.
ST HELENS v WARRINGTON Sky Sports 3, 8pm WARRINGTON look a good bet for their Super League assignment at St Helens tonight, writes Rod Studd.
A GOOD BET? While undoubtedly shrewd and cutthroat in business, Kraft is an everyman sports fan through and through.
From midsummer on, a mixture of Chinese leaves, mustards and mizuna is a good bet.
It was a good bet that this was yet another attempt to divert precious public funding away from realistic job creation schemes, health, etc - PS2m wasted already, it seems.
With Frank Sinatra belting out Leaving On A Jet Plane, there's a good bet Benidorm fans may even shed a little tear as the regulars pack their bags at the end of another series.
He told the BBC's Good Morning Scotland: "I just wonder if Andrew would be a good bet, just given that they met in St Andrews.
NORTHERN STAGE AT EDINBURGH FESTIVAL @ propershameful : Northern Stage at St Stephens is a good bet all round for shows.
Swan Lake is a good bet for carp in the 12lb to 15lb range on small boilies or pellets, while the Birch Syndicate Lake has produced a string of big carp, the best weighing 27.5lb and caught by Michael Evans, as well as pike over 20lb.
MOUNT SANDEL (3.05) looks a good bet to complete his hat-trick in the 3m novices' chase at Carlisle.