Cryptic crossword clue
Every six months or less, a term that’s flexible 9

The most common and most likely answer to this crossword clue is the 9 letter word SEMESTRAL

I've seen this crossword clue in The Guardian
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Buddy explains!

The straight part
We know that "Every six months/Every six months" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case every six months/every six months = semestral.
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.

Crossword Answer definitions

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