Barely fitting (4)

I believe the answer is:

just

I believe this clue is a double definition.

'barely' is the first definition.
(synonyms)

'fitting' is the second definition.
(similar in meaning)

(Other definitions for just that I've seen before include "Ethically right" , "And nothing more" , "Quite" , "Barely; right and fair" , "By a whisker" .)

I've seen this clue in The Times.

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