The phrase "seriously rich" is correct and usable in written English.
You can use it to describe someone who has a lot of money, such as: "He's seriously rich - he must have a lot of investments".
The seriously rich, of course, are still spending freely.
Information is shared between seriously rich financiers rather than hoarded.
The few who are seriously rich hedge their bets.
I've asked quite a few people in the world of money, the kind of people who know properly seriously rich people, what counts are being properly, seriously rich.
But small, freebooting entrepreneurs may be willing to go, in the hope of becoming seriously rich.
"There is no evidence, yet, of seriously rich female entrepreneurs coming in huge numbers," he says.
Now, Gavyn Davies is about to become seriously rich not merely seven-figure-income-and-three-posh-houses rich, but seriously rich.
At that level, even the seriously rich agree that you are rich.
It's not that I'm a seriously rich person, but I'm not on food stamps, either.
Packer accepted, became seriously rich and decided to have some fun.
First, they are overwhelmingly well-off, ranging from securely prosperous to seriously rich.
