The most common and most likely answer to this crossword clue is the 6 letter word IBIDEM
I've seen this crossword clue in The Guardian
I
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I
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M
More clues leading to the result IBIDEM
- Your compiler’s about to stay in the same place
- This writer's going round to stay in the same place
- I remain with Mike in the same place
- In the same book, I remain magnificent, initially
- I’m having to live in the same place
- Setter’s about to stay in the same place
- I wait for minutes in the same place
- I’m about to stay in the same place
- Entering northbound motorway, remain in the same place
- The compiler’s about to stay in the same place
Buddy explains!
The straight part
We know that "In the same book" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in the same book = ibidem.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.