Cryptic crossword clue
Vehicle reversed by man taking car from Cary Grant 7

The most common and most likely answer to this crossword clue is the 7 letter word SUBSIDY

I've seen this crossword clue in The Guardian
S
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Y

Buddy explains!

The straight part
We know that "Grant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case grant = subsidy.
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 SUBSIDY mean?

SUBSIDY noun
  1. Financial support or assistance, such as a grant.
  2. Money granted by parliament to the British Crown.

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