Crossword Genius

One leaving uniform edition not fully developed (8)

Ross

I believe the answer is:

unformed

'not fully developed' is the definition.
(I've seen this before)

'one leaving uniform edition' is the wordplay.
'one' becomes 'i' (Roman numeral).
'leaving' suggests deleting specific letters.
'edition' becomes 'ed'.
'uniform' with 'i' taken away is 'unform'.
'unform'+'ed'='UNFORMED'

(Another definition for unformed that I've seen is " Not fully developed".)

I've seen this clue in The Times.
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