The most common and most likely answer to this crossword clue is the 9 letter word RECURSION
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More clues leading to the result RECURSION
Buddy explains!
The straight part
We know that "rarely going back" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rarely going back = recursion.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 RECURSION mean?
RECURSION noun- The act of recurring.
- The act of defining an object (usually a function) in terms of that object itself.
- The invocation of a procedure from within itself.