The most common and most likely answer to this crossword clue is the 11 letter word RECIPROCATE
I've seen this crossword clue in The Daily Telegraph
R
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More clues leading to the result RECIPROCATE
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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 RECIPROCATE mean?
RECIPROCATE verb- To exchange two things, with both parties giving one thing and taking another thing.
- To give something else in response (where the "thing" may also be abstract, a feeling or action) To make a reciprocal gift.
- To move backwards and forwards, like a piston.
- To counter, retort or retaliate.