Feistiest criminal gives evidence (9)

I believe the answer is:

testifies

'gives evidence' is the definition.
(I've seen this before)

'feistiest criminal' is the wordplay.
'criminal' indicates an anagram.
'feistiest' with letters rearranged gives 'TESTIFIES'.

(Another definition for testifies that I've seen is " Gives evidence".)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app