Proved trustworthy (5)

I believe the answer is:

tried

This clue is a double definition.

'proved' is the first definition.
('try' can be a synonym of 'prove')

'trustworthy' is the second definition.
(I've seen this in another clue)

(Other definitions for tried that I've seen before include "Put to the test" , "Sampled" , "Essayed" , "heard in court" , "Tested" .)

I've seen this clue in The Times.

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