The most common and most likely answer to this crossword clue is the 7 letter word WEALTHY
I've seen this crossword clue in The Sunday Telegraph
W
E
A
L
T
H
Y
More clues leading to the result WEALTHY
- Well-heeled wife in the pink having lost first husband
- Prosperity unknown to plutocrats
- Breaking the law on end of jetty – that’s rich
- Law they manipulated, becoming rich
- The yawl in storm is rolling
- Loaded term for criminality after reforming the law
- Loaded rifles the law destroy in the end
- Loaded pistol finally getting in the way, having gone off
- Why late? Worried? That's rich!
- Loaded question about dubious tale
Buddy explains!

The straight part
We know that "rich" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rich = wealthy.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WEALTHY mean?
WEALTHY noun- A rich person.
- (with "the") Rich people.
- Possessing financial wealth; rich.
- Abundant in quality or quantity; profuse.