Acceptable — valid (10)

I believe the answer is:
admissible
I believe this clue is a double definition.
'acceptable' is the first definition.
(thesaurus)
'valid' is the second definition.
(thesaurus)
(Other definitions for admissible that I've seen before include "Acceptable, valid" , "(As evidence in court) valid" .)
I've seen this clue in The Times and The Guardian.
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