Crossword Genius

Appear just if seamer proves unreliable (4,4)

Ross

I believe the answer is:

seem fair

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'seamer proves unreliable' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'appear just' is the wordplay.
'appear' becomes 'seem' (synonyms).
'just' becomes 'fair' (just can mean fair in the sense of showing justice).
'seem'+'fair'='SEEM FAIR'

'if' acts as a link.

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I've seen this clue in The Guardian.
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