Crossword Genius

Choice of three directions given under oath (5)

Ross

I believe the answer is:

sworn

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This clue might be a double definition.

'choice of three directions' is the first definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

'given under oath' is the second definition.
(I've seen this before)

Can you help me to learn more?

(Other definitions for sworn that I've seen before include "promised" , "Stated on oath" , "Affirmed" , "Given under oath" , "confirmed in office" .)

I've seen this clue in The Times.
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